A. Schild (AS) Calibre 1996 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1996 is a well-regarded Swiss automatic mechanical movement known for its reliable day/date complication and efficient sweep seconds. Introduced in the mid-20th century, it has become a staple in the collection and restoration of vintage Swiss wristwatches, prized for its engineering and durability.
Key Technical Highlights

Calibre: AS 1996

Movement Type: Automatic, mechanical

Diameter: 25.60 mm (11.5 lignes)

Height: 5.25 mm

Jewels: 17, 21, or 25 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Approximately 42 hours

Functions: Hours, minutes, sweep seconds, quickset day/date (date change by time manipulation between 20:20 and midnight)

Shock Protection: Often equipped with Incabloc or an equivalent system

Lift Angle: Around 52°

Common Spare Parts and Components

Mainspring and Barrel: New-old-stock (NOS) or original parts ensure stable power transmission and longevity.

Balance Wheel and Balance Staff: Crucial for precision timekeeping and impact resistance; genuine or NOS replacements maintain accuracy.

Automatic Rotor and Bearings: Key for smooth automatic winding; worn components require genuine or NOS swaps.

Pallet Fork and Escape Wheel: Escapement parts that wear out need authentic replacements for consistent performance.

Gear Train Wheels: Includes minute, third, and fourth wheels; common wear points replaced with NOS or donor movement parts.

Setting Mechanism (Stem, Crown, Levers, Springs): Precision-fitted components facilitate smooth winding, time setting, and date adjustment.

Jewels: Synthetic ruby bearings reduce friction and wear; replacements must match the original layout perfectly.

Hands and Dial Components: Period-accurate parts preserve vintage watch aesthetics and collector value.

Date and Day Mechanism Parts: Date jumper, unlocking yoke, and day star parts essential for smooth calendar operation.

Sourcing and Maintenance Tips

Use only original, NOS, or donor parts specifically designed for the AS 1996 to ensure compatibility and maintain movement integrity.

Handle delicate parts such as balance assembly and escapement carefully during servicing.

Apply synthetic watch oils sparingly and in line with vintage service standards for best longevity.

Always confirm the calibre number on the main plate before ordering parts to prevent mistakes.

Donor AS 1996 movements offer a valuable source for hard-to-find or worn parts.

Why AS 1996 Spare Parts Matter

Genuine parts preserve the calibre’s accuracy, durable automatic winding, and reliable quickset date, essential for long-term vintage watch performance.

Authentic restoration sustains the historical and collector value of these classic Swiss mechanical watches.

Comprehensive documentation and active watchmaking communities help ensure expert repairs and timely parts availability.

Maintaining your A. Schild AS 1996 with authentic spare parts ensures your vintage timepiece continues to perform reliably while honoring Swiss horological tradition.

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A. Schild (AS) Calibre 1920 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1920 is a vintage Swiss automatic mechanical movement notable for its high frequency of 36,000 vibrations per hour (vph), robust build, and practical complications. Manufactured primarily in the mid-20th century, it features sweep seconds, day, and date functions with a quickset date mechanism activated by repeatedly pushing the crown. This calibre is highly valued by collectors and watchmakers restoring classic automatic wristwatches.
Key Technical Highlights

Calibre: AS 1920

Movement Type: Automatic, mechanical with sweep seconds

Diameter: 28.00 mm (12.5 lignes)

Height: 5.20 mm

Jewels: 17 or 25 synthetic ruby jewels

Beat Rate: 36,000 vibrations per hour (high frequency)

Power Reserve: Approximately 46 hours

Functions: Hours, minutes, sweep seconds, day, date with quickset by crown pushing

Shock Protection: Vintage anti-shock system (commonly Incabloc)

Lift Angle: Approximately 52°

Common Spare Parts and Components

Mainspring and Barrel: Original or new-old-stock (NOS) mainsprings recommended for steady torque and reliable power delivery.

Balance Wheel and Balance Staff: Precision components essential for accurate timekeeping and shock resistance; exact fitting is crucial.

Rotor Assembly and Bearings: Integral to smooth automatic winding; genuine or high-quality NOS replacements ensure longevity.

Pallet Fork and Escape Wheel: Wear-prone escapement parts; sourcing original or NOS parts maintains smooth operation.

Gear Train Wheels: Includes minute, third, and sweep second wheels; replacement parts usually sourced from donor movements or NOS stock.

Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting parts necessary for smooth winding, time, day, and date adjustments; winding stems like Part No. 401 are compatible.

Jewels: Synthetic ruby bearings arranged to minimize friction; replacements must correspond exactly to the original layout.

Hands and Dial Components: Period-correct parts preserve vintage authenticity and enhance collector appeal.

Date and Day Complications: Components such as date indicator guards, calendar driving wheels, date jumpers, unlocking yokes, and day stars are vital for reliable calendar function.

Sourcing and Maintenance Tips

Use original, NOS, or donor parts specifically designated for the AS 1920 calibre to ensure compatibility and preserve movement quality.

Handle delicate components like balance assemblies, escapement parts, and rotor assemblies with care during servicing.

Apply modern synthetic watch oils sparingly, adhering to vintage lubrication standards to optimize longevity and performance.

Always verify the calibre number stamped on the main plate before ordering parts to avoid incompatibilities.

Donor AS 1920 movements are invaluable sources of rare or worn components.

Why AS 1920 Spare Parts Matter

Genuine parts preserve the calibre’s accuracy, high-frequency performance, reliable automatic winding, and smooth calendar functions, essential for dependable vintage watch operation.

Proper restoration with authentic components maintains the historical significance and collector value of these classic Swiss automatic wristwatches.

Detailed technical documentation and an active watchmaker community support efficient parts sourcing and expert repairs.

Maintaining the A. Schild AS 1920 calibre with high-quality, authentic spare parts is crucial for ensuring these high-frequency vintage automatics continue to run smoothly and honor their distinguished place in Swiss horological heritage.

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A. Schild (AS) Calibre 1930 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1930 is a vintage Swiss manual-wind mechanical movement celebrated for its precision, reliability, and unique alarm complication. Produced mainly from the 1940s through the 1970s, this calibre features sweep seconds with an alarm function, making it a distinctive and highly valued movement among watch collectors and restorers.
Key Technical Highlights

Calibre: AS 1930

Movement Type: Manual winding, mechanical with alarm and sweep seconds

Diameter: 25.60 mm (11.5 lignes)

Height: 5.75 mm

Jewels: 17 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Approximately 50 hours

Alarm Duration: Around 12 seconds

Functions: Hours, minutes, sweep seconds, mechanical alarm

Shock Protection: Vintage anti-shock system (often Incabloc or equivalent)

Lift Angle: Approximately 52°

Common Spare Parts and Components

Mainspring and Barrel: Original or new-old-stock (NOS) mainsprings are crucial for consistent power delivery and alarm function longevity.

Balance Wheel and Balance Staff: Precision components essential for reliable timekeeping and shock resistance; exact fitting parts are required.

Alarm Mechanism Components: Unique parts including alarm spring, hammer, and settings demand careful sourcing to maintain alarm performance.

Pallet Fork and Escape Wheel: Wear-prone escapement parts; genuine or NOS replacements ensure smooth operation.

Gear Train Wheels (Minute, Third, Fourth): Often replaced due to wear; typically sourced from donor movements or NOS stock.

Setting Mechanism (Stem, Crown, Levers, Springs): Precise fitting parts vital for smooth winding, time setting, and alarm activation.

Jewels: Synthetic ruby bearings arranged to minimize friction; replacements must match original layout to preserve movement integrity.

Hands and Dial Components: Period-appropriate parts maintain vintage authenticity and enhance collector value.

Sourcing and Maintenance Tips

Use only original, NOS, or donor parts specifically marked for AS 1930 to guarantee compatibility and preserve movement quality.

Handle delicate components like the alarm mechanism, balance assembly, and escapement with great care during servicing.

Apply modern synthetic watch oils sparingly and adhere to vintage lubrication standards for optimal performance and longevity.

Always verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.

Donor AS 1930 movements are valuable sources for rare or worn components.

Why AS 1930 Spare Parts Matter

Authentic parts maintain the calibre’s accuracy, reliable manual winding, and distinctive mechanical alarm function, crucial for dependable vintage watch operation.

Proper restoration with genuine components safeguards the historical significance and collector value of these classic Swiss manual-wind alarm watches.

Detailed technical documentation and an active watchmaker community facilitate efficient parts sourcing and expert servicing.

Maintaining the A. Schild AS 1930 calibre with high-quality, authentic spare parts ensures these vintage manual-wind alarm watches continue running reliably while preserving their special place in Swiss horological history.

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A. Schild (AS) Calibre 1931 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1931 is a vintage Swiss manual-winding mechanical movement highly regarded for its reliability, classic design, and practical features. Primarily produced in the mid-20th century, this calibre is known for its sweep second, date complication, and a unique mechanical alarm function, making it a distinctive choice among collectors and watchmakers restoring classic vintage timepieces.
Key Technical Highlights

Calibre: AS 1931

Movement Type: Manual winding, mechanical with sweep seconds, date, and mechanical alarm

Diameter: 25.60 mm (11.5 lignes)

Height: Approximately 5.75 mm

Jewels: 17 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: About 50 hours

Alarm Duration: Approximately 12 seconds

Lift Angle: Around 52°

Additional Functions: Date quickset by changing time and mechanical alarm actuation

Common Spare Parts and Components

Mainspring and Barrel: Original or NOS mainsprings and barrels are recommended for consistent power delivery and maintaining alarm functionality.

Balance Wheel and Balance Staff: Precision parts critical for accurate timekeeping and shock resistance; exact fitting is required.

Alarm Mechanism Components: Specialized parts like alarm spring, hammer, and activating levers essential for proper alarm operation.

Pallet Fork and Escape Wheel: Wear-prone escapement parts; sourcing original or NOS ensures smooth operation.

Gear Train Wheels (Minute, Third, Fourth): Often replaced due to wear; may be sourced from donor movements or NOS stock.

Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting components ensure smooth winding, time setting, date adjustment, and alarm activation.

Jewels: Synthetic ruby bearings designed to reduce friction; replacements must strictly conform to original design.

Hands and Dial Components: Period-correct parts maintain the vintage authenticity and enhance collector value.

Sourcing and Maintenance Tips

Use original, NOS, or donor parts specifically marked for AS 1931 to guarantee compatibility and preserve movement integrity.

Exercise caution when handling delicate components such as the alarm mechanism, balance assembly, escapement parts, and setting system during servicing.

Apply modern synthetic watch oils sparingly following vintage lubrication practices to ensure longevity and optimal functionality.

Verify the calibre number stamped on the movement main plate before ordering parts to avoid incompatibility.

Donor AS 1931 movements are invaluable sources for rare or worn components, especially alarm-related parts.

Why AS 1931 Spare Parts Matter

Genuine parts ensure the calibre’s accuracy, mechanical reliability, smooth manual winding, and uniquely, its mechanical alarm functionality, critical for dependable vintage watch performance.

Proper restoration with authentic components preserves the historical significance and collector value of these original Swiss manual-wind alarm watches.

Extensive technical documentation and a dedicated watchmaker community support efficient parts sourcing and expert servicing.

Maintaining the A. Schild AS 1931 calibre with high-quality, authentic spare parts is essential for ensuring these vintage mechanical alarm watches continue to run reliably while honoring their place in Swiss horological heritage.

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A. Schild (AS) Calibre 1940 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1940 is a vintage Swiss manual-wind mechanical movement known for its precision, robust build, and practical features such as sweep seconds. Primarily produced around the mid-20th century, this calibre offers reliable performance and remains sought after by collectors and watchmakers restoring classic wristwatches.
Key Technical Highlights

Calibre: AS 1940

Movement Type: Manual winding, mechanical with sweep seconds

Diameter: Approximately 23.7 to 23.3 mm (10.5 lignes)

Height: Around 4.5 mm

Jewels: 17 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Approximately 46 hours

Lift Angle: About 52°

Functions: Hours, minutes, sweep seconds

Shock Protection: Vintage anti-shock system (likely Incabloc or equivalent)

Common Spare Parts and Components

Mainspring and Barrel: Critical for steady and reliable power delivery; original or New-Old-Stock (NOS) mainsprings are recommended for proper torque and longevity.

Balance Wheel and Balance Staff: Precision components vital for accurate timekeeping and shock absorption; exact fitting parts ensure dependable performance.

Pallet Fork and Escape Wheel: Wear-prone escapement parts; sourcing original or NOS components maintains smooth and reliable operation.

Gear Train Wheels (Minute, Third, Fourth): Common replacement parts due to wear; typically harvested from donor movements or NOS stock.

Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting parts essential for smooth winding and time setting functions.

Jewels: Synthetic ruby bearings arranged to minimize friction; replacements must match the original layout to preserve movement integrity.

Hands and Dial Components: Period-correct parts help maintain vintage authenticity and enhance collector appeal.

Sourcing and Maintenance Tips

Use only original, NOS, or donor parts specifically designated for AS 1940 to ensure full compatibility and preserve movement quality.

Handle delicate components such as balance assemblies and escapement parts carefully during servicing to prevent damage.

Apply modern synthetic watch oils sparingly, following vintage lubrication standards for optimal longevity and performance.

Always verify the calibre number stamped on the movement main plate before ordering parts to avoid mismatches.

Donor AS 1940 movements are valuable sources for rare or worn components.

Why AS 1940 Spare Parts Matter

Genuine parts ensure the calibre’s accuracy, mechanical reliability, and smooth manual winding, essential for dependable vintage watch performance.

Restoration with authentic components preserves the historical significance and collector value of these classic Swiss manual-wind watches.

Detailed technical documentation and active watchmaker communities facilitate efficient parts sourcing and expert servicing.

Maintaining the A. Schild AS 1940 calibre with high-quality, authentic spare parts is crucial for preserving the functionality and integrity of these cherished vintage mechanical movements while honoring their place in Swiss horology heritage.

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A. Schild (AS) Calibre 1941 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1941 is a vintage Swiss manual winding mechanical movement valued for its precision, reliability, and balanced features. Produced primarily in the mid-20th century, it features sweep seconds and a date complication, making it a practical and elegant choice for classic wristwatches. The movement enjoys a solid reputation among collectors and watchmakers for restoration.
Key Technical Highlights

Calibre: AS 1941

Movement Type: Manual winding, mechanical with sweep seconds and date

Diameter: 23.30 mm (10.5 lignes)

Height: 4.50 mm

Jewels: 17 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Approximately 46 hours

Shock Protection: Typically fitted with KIF or similar anti-shock system

Functions: Hours, minutes, sweep seconds, and date window

Lift Angle: Around 52°

Common Spare Parts and Components

Mainspring and Barrel: Use original or new-old-stock (NOS) mainsprings to ensure consistent power delivery and optimal torque.

Balance Wheel and Balance Staff: Precision components critical for accurate timekeeping and shock resistance; exact fit is essential for reliability.

Pallet Fork and Escape Wheel: Wear-prone escapement parts; authentic or NOS replacements help maintain smooth, precise operation.

Gear Train Wheels: Includes minute, third, and fourth wheels; replacements typically sourced from donor movements or NOS inventory.

Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting parts are crucial for smooth winding, time setting, and date adjustment.

Jewels: Synthetic ruby bearings positioned to minimize friction; replacement jewels must conform exactly to original layout to maintain movement integrity.

Hands and Dial Components: Period-correct parts preserve vintage authenticity and enhance collector appeal.

Date Mechanism Components: Includes date jumper, unlocking yoke, and date indicator guard to ensure reliable date function.

Sourcing and Maintenance Tips

Always choose original, NOS, or donor parts specifically designated for AS 1941 to guarantee full compatibility and preserve movement quality.

Handle delicate components such as the balance assembly, escapement parts, and date mechanism carefully during servicing to avoid damage.

Apply modern synthetic watch lubricants sparingly, adhering to vintage lubrication standards for optimal longevity and performance.

Verify the calibre number stamped on the main plate before ordering parts to prevent mismatches.

Donor AS 1941 movements serve as invaluable sources for rare or worn parts.

Why AS 1941 Spare Parts Matter

Authentic spare parts ensure the calibre’s accuracy, reliable manual winding performance, and smooth date function, which are essential for dependable vintage watch operation.

Proper restoration with genuine components preserves the historical significance and collector value of these classic Swiss manual-wind wristwatches.

Easy access to detailed technical documentation and an active watchmaker community facilitates expert repairs and efficient parts sourcing.

Maintaining the A. Schild AS 1941 calibre with high-quality, authentic spare parts is essential to ensuring these vintage manual-wind watches continue running reliably while honoring their place in Swiss horological heritage.

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A. Schild (AS) Calibre 1950 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1950 is a vintage Swiss manual-wind mechanical movement, highly regarded for its precision, reliability, and classic design. Manufactured primarily around the 1960s, it features a sweep second hand and often includes a date complication, making it a popular choice among collectors and watchmakers restoring classic wristwatches.
Key Technical Highlights

Calibre: AS 1950 (also referenced as AS/ST 1950/51)

Movement Type: Manual winding, mechanical with sweep seconds and optional date

Diameter: 25.60 – 25.90 mm (11.5 lignes)

Height: Approximately 4.50 – 5.95 mm (variation depending on model/version)

Jewels: Typically 17 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Around 46 hours

Functions: Hours, minutes, sweep seconds, date (date set typically by changing time around 21:00 to 24:00)

Shock Protection: Vintage anti-shock system, commonly Incabloc

Signature Marks: Often signed AS, ST, or AS/ST on the movement

Common Spare Parts and Components

Mainspring and Barrel: Essential for stable and consistent power delivery; original or NOS (new-old-stock) mainsprings recommended.

Balance Wheel and Balance Staff: Precision parts crucial for timing accuracy and shock resistance; must match exactly to preserve reliability.

Pallet Fork and Escape Wheel: Wear-prone escapement parts that require authentic or NOS replacements for smooth operation.

Gear Train Wheels: Includes minute, third, and fourth wheels; sourced from donor movements or NOS stocks.

Setting Mechanism: Stem, crown, levers, springs including winding stems such as Part No. 401, essential for smooth winding, time setting, and calendar adjustments.

Jewels: Synthetic ruby bearings carefully arranged to reduce friction; exact replacements maintain movement integrity.

Hands and Dial Components: Period-correct parts maintain vintage aesthetic and collector appeal.

Date Mechanism Components: Date disc, jumper springs, and related parts ensure reliable calendar function.

Sourcing and Maintenance Tips

Always source original, NOS, or donor parts specifically designated for AS 1950 to ensure full compatibility and maintain movement quality.

Delicate components such as balance assembly, escapement, and calendar parts require careful handling during servicing.

Use modern synthetic watch oils sparingly, adhering to vintage lubrication standards to promote longevity and optimal function.

Verify the calibre number stamped on the main plate before ordering to avoid incompatibility issues.

Donor AS 1950 movements are valuable sources for rare or worn parts.

Why AS 1950 Spare Parts Matter

Authentic parts preserve the calibre’s accuracy, mechanical reliability, and smooth manual winding, vital for dependable vintage watch operation.

Proper restoration with genuine components safeguards the historical significance and collector value of this classic Swiss manual-wind movement.

Detailed technical documentation and an active watchmaker community facilitate expert repairs and efficient parts sourcing.

Maintaining the A. Schild AS 1950 calibre with high-quality, authentic spare parts is essential to keep these vintage manual-wind timepieces running reliably while honoring their place in Swiss horological heritage.

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A. Schild (AS) Calibre 1951 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1951 is a vintage Swiss manual-winding mechanical movement valued for its reliability, precise timekeeping, and practical date complication. Produced primarily around the mid-20th century, this calibre features a sweep second function, manual winding, and a date display that is typically set by changing the time between 21:00 and midnight. It is highly regarded among collectors and watchmakers restoring classic wristwatches.
Key Technical Highlights

Calibre: AS 1951

Movement Type: Manual winding, mechanical with sweep seconds and date

Diameter: 25.60 mm (11.5 lignes)

Height: Approximately 4.50 mm

Jewels: 17 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Around 46 hours

Functions: Hours, minutes, sweep seconds, date

Shock Protection: Vintage anti-shock system, typically Incabloc or equivalent

Signature Marks: AS, ST, or AS/ST

Common Spare Parts and Components

Mainspring and Barrel: Essential for reliable power delivery; original or New-Old-Stock (NOS) mainsprings ensure proper torque and longevity.

Balance Wheel and Balance Staff: Precision parts critical for accurate timekeeping and shock resistance; must be exact fit.

Pallet Fork and Escape Wheel: Wear-prone escapement components; sourcing original or NOS replacements ensures smooth operation.

Gear Train Wheels (Minute, Third, Fourth): Often replaced due to wear or damage; typically harvested from donor movements or NOS stock.

Setting Mechanism (Stem, Crown, Levers, Springs): Precise fitting parts vital for smooth winding, time setting, and quick date adjustment. Compatible winding stems such as Part No. 401 are commonly used.

Jewels: Synthetic ruby bearings positioned to minimize friction; replacements must match the original layout exactly.

Hands and Dial Components: Period-appropriate parts preserve the vintage aesthetic and maintain collector value.

Sourcing and Maintenance Tips

Use original, NOS, or donor parts specifically designated for AS 1951 to guarantee full compatibility and maintain movement integrity.

Handle delicate components like the balance assembly, escapement, and setting mechanism with care during servicing.

Apply modern synthetic watch oils sparingly and in accordance with vintage lubrication protocols to enhance longevity and performance.

Verify the calibre number stamped on the movement main plate before ordering parts to avoid mismatches.

Donor AS 1951 movements serve as valuable sources for rare or difficult-to-find components.

Why AS 1951 Spare Parts Matter

Genuine parts preserve the calibre’s accuracy, manual winding reliability, and smooth date functionality, essential for dependable vintage watch operation.

Authentic restoration maintains the historical significance and collector value of this classic Swiss manual-wind movement.

Well-documented technical specifications and an active watchmaker community support efficient parts sourcing and expert servicing.

Maintaining the A. Schild AS 1951 calibre with high-quality, authentic spare parts ensures these vintage mechanical watches continue to run reliably while honoring their respected place in Swiss horology heritage.

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A. Schild (AS) Calibre 1977 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1977 is a vintage Swiss manual-wind mechanical movement, known for its reliability and compact design. Produced primarily in the mid-20th century, this calibre is favored by collectors and watchmakers restoring classic vintage wristwatches, especially ladies’ watches due to its relatively small size.
Key Technical Highlights

Calibre: AS 1977

Movement Type: Manual winding, mechanical

Dimensions: Approximately 13.00 x 15.20 mm (shaped movement)

Height: 3.50 mm

Jewels: 17 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: About 44 hours

Functions: Hours, minutes, and sweep seconds

Shock Protection: Typically equipped with Incabloc

Escapement: Lever escapement

Regulation: Classic A. Schild design with indexed regulator

Setting Mechanism: Yoke winding system, smooth winding and setting

Common Spare Parts and Components

Mainspring and Barrel: Original or new-old-stock (NOS) mainsprings are vital for steady power delivery and torque stability.

Balance Wheel and Balance Staff: Precision parts essential for accurate timekeeping and shock resistance, requiring exact fitment.

Pallet Fork and Escape Wheel: Wear-prone escapement components; sourcing genuine or NOS replacements is recommended for smooth operation.

Gear Train Wheels: Including minute, third, and fourth wheels, commonly replaced due to wear and usually sourced from donor movements or NOS stock.

Setting Mechanism (Stem, Crown, Levers, Springs): Accurate-fitting components necessary for smooth manual winding and time setting.

Jewels: Synthetic ruby bearings designed to minimize friction; exact matching replacements preserve movement integrity.

Hands and Dial Components: Period-correct parts maintain vintage authenticity and collector value.

Sourcing and Maintenance Tips

Use original, NOS, or donor parts specifically designated for AS 1977 to ensure compatibility and maintain quality.

Handle delicate components such as the balance assembly, escapement, and setting mechanisms carefully during servicing to avoid damage.

Apply modern synthetic watch lubricants sparingly, following vintage lubrication protocols for optimal longevity and performance.

Verify the calibre number stamped on the movement main plate before ordering to prevent incompatible parts.

Donor AS 1977 movements can be excellent sources for rare or worn components.

Why AS 1977 Spare Parts Matter

Genuine parts preserve the calibre’s accuracy, mechanical reliability, and smooth manual winding operation, critical for dependable vintage watch performance.

Proper restoration with authentic parts protects the historical significance and collector value of this classic Swiss manual-wind movement.

Availability of detailed technical data and an active watchmaker community simplifies parts sourcing and expert repairs.

Maintaining the A. Schild AS 1977 calibre with high-quality, original spare parts keeps these vintage timepieces running reliably while respecting their place in Swiss horological heritage.

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A. Schild (AS) Calibre 1977.2 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1977.2 is a vintage Swiss manual-winding mechanical movement known for its compact size, reliability, and classic manual winding mechanism. It is an improved version of the AS 1977 calibre with key modifications to the balance and barrel, making it a sought-after calibre for vintage watch restoration, especially for smaller watches.
Key Technical Highlights

Calibre: AS 1977.2

Movement Type: Manual winding, mechanical

Dimensions: Approximately 13.05 x 15.20 mm (5.75 x 6.75 lignes)

Height: ~3.50 mm

Jewels: 17 or 21 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Around 44 hours

Functions: Hours, minutes, sweep seconds

Shock Protection: Vintage anti-shock system (commonly Incabloc or equivalent)

Notable Updates: New balance and barrel compared to earlier AS 1977 variants

Winding Gear: Redesigned for improved durability in this and related variants

Common Spare Parts and Components

Mainspring and Barrel: Key parts for consistent power delivery; original or NOS mainsprings and barrel assemblies ensure reliable torque and longevity.

Balance Wheel and Balance Staff: Precision components essential for accurate timekeeping and shock resistance; must be exact match for reliable operation.

Pallet Fork and Escape Wheel: Escapement parts subject to wear; replacement with genuine or NOS parts maintains smooth movement.

Gear Train Wheels: Includes minute, third, and fourth wheels; replacements often sourced from donor movements or NOS stock.

Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting parts critical for smooth manual winding and time setting. Winding stems like Part No. 401 are typically compatible.

Jewels: Synthetic ruby bearings reduce friction; replacements must match original jewel layout to maintain movement integrity.

Hands and Dial Components: Period-appropriate parts preserve the vintage look and authenticity.

Sourcing and Maintenance Tips

Always use original, NOS, or donor parts specifically designated for AS 1977.2 to ensure proper fit and maintain quality.

Handle delicate components such as the balance assembly, escapement, and barrel carefully during servicing.

Apply modern synthetic watch oils sparingly, adhering to vintage lubrication protocols for longevity and performance.

Verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.

Donor AS 1977.2 and similar 1977-series movements can be valuable sources for rare or worn components.

Why AS 1977.2 Spare Parts Matter

Genuine parts preserve the calibre’s accuracy, mechanical reliability, and smooth manual winding — essential for dependable vintage watch operation.

Proper restoration with authentic parts maintains the historical significance and collector value of this classic Swiss manual-wind movement.

Availability of detailed technical information and an active watchmaker community supports expert repairs and efficient parts sourcing.

Maintaining the A. Schild AS 1977.2 calibre with high-quality, authentic spare parts is crucial for keeping these vintage manual-wind watches running reliably while honoring their place in Swiss horological heritage.

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Stem, Crown, Hands & Spares might be available for this movement.

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