A. Schild (AS) Calibre 1911 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1911 is a vintage Swiss manual-wind mechanical movement, well-regarded for its reliability, classic design, and precise timekeeping. Produced mainly around the 1970s, this calibre features a sweep second hand, quickset date function, and operates at a frequency of 21,600 vibrations per hour with a power reserve of approximately 48 hours. Its dimensions are 26 mm in diameter (11.5 lignes) and it typically houses 17 jewels.
Key Technical Highlights
Calibre: AS 1911
Movement Type: Manual winding, mechanical
Diameter: 26 mm (11.5 lignes)
Jewels: 17 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: Approximately 48 hours
Functions: Hours, minutes, sweep seconds, quickset date
Lift Angle: 52°
Period Used: Circa 1970
Common Spare Parts and Components
Mainspring and Barrel: Original or new-old-stock (NOS) mainsprings recommended for consistent power delivery and optimal torque.
Balance Wheel and Balance Staff: Precision components crucial for accurate timing and shock absorption; must be exact fits.
Setting Mechanism (Stem, Crown, Levers, Springs): Key for smooth winding, time setting, and reliable quickset date operation. The winding stem Part No. 401 is commonly compatible.
Pallet Fork and Escape Wheel: Wear-prone escapement parts; sourcing original or NOS replacements ensures smooth and reliable escapement function.
Gear Train Wheels: Includes minute, third, and fourth wheels; often replaced due to wear, typically from donor movements or new-old-stock.
Jewels: Synthetic ruby bearings positioned to reduce friction; replacements must match the original layout for preservation of movement integrity.
Hands and Dial Components: Period-correct parts help maintain vintage authenticity and enhance collector appeal.
Date Mechanism Parts: Including date jumper, unlocking yoke, and related components essential for quickset date reliability.
Sourcing and Maintenance Tips
Always acquire original, NOS, or donor parts specific to AS 1911 to ensure seamless compatibility and preservation of movement quality.
Exercise caution when handling delicate components such as balance assemblies, escapement parts, and date mechanism during servicing.
Use modern synthetic watch oils sparingly, adhering to vintage lubrication protocols to maximize longevity and optimal performance.
Verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.
Donor AS 1911 movements are valuable sources for rare or worn components.
Why AS 1911 Spare Parts Matter
Genuine parts preserve the calibre’s accuracy, mechanical reliability, and smooth manual winding function, essential for dependable performance in vintage wristwatches.
Proper restoration with authentic components maintains the historical significance and collector value of this classic Swiss manual-wind movement.
Comprehensive technical documentation and an active watchmaker community facilitate expert servicing and reliable part sourcing.
Maintaining the A. Schild AS 1911 calibre with high-quality, authentic spare parts ensures these vintage manual-wind timepieces continue to run reliably while honoring their esteemed place in Swiss horological heritage.
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Stem, Crown, Hands & Spares might be available for this movement.
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