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A. Schild (AS) Calibre 1395 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1395 is a vintage Swiss automatic mechanical movement produced around the 1950s, known for its robust construction, reliable automatic winding, and calendar complication featuring two dial apertures. It is a variation of the AS 1361 calibre, enhanced with a calendar function, making it highly sought after by collectors and watchmakers restoring mid-20th-century timepieces.
Key Technical Highlights
Calibre: AS 1395
Movement Type: Automatic winding, mechanical
Diameter: 26 mm (11.5 lignes)
Height: Approximately 7.15 mm
Jewels: Typically 17 or 21 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Around 38 hours
Functions: Hours, minutes, sweeping central seconds, date with calendar complication (two dial apertures)
Shock Protection: Standard vintage anti-shock systems, typically Incabloc or similar
Common Spare Parts and Components
Mainspring and Barrel: Essential for power storage and transmission; need precise replacements to maintain power consistency.
Balance Wheel and Balance Staff: Critical for accurate timekeeping and delicate; replacements must fit original specifications for shock protection and dimensions.
Rotor Assembly: Key for automatic winding; wear to bearings or axle affects winding efficiency and requires careful replacement.
Pallet Fork and Escape Wheel: Wear-prone escapement components; sourcing authentic or compatible parts is crucial for smooth operation.
Calendar Components: Includes date wheels, jumpers, springs, and cams specific to the AS 1395 calendar function, necessary for full restoration of date features.
Gear Train Wheels (Minute, Third, Fourth): Commonly replaced due to wear or damage; donor movements or new-old-stock (NOS) parts are typical sources.
Setting Mechanism Parts: Stem, crown, setting lever, and springs must precisely fit AS 1395 for reliable winding, time setting, and calendar adjustments.
Jewels: Synthetic ruby bearings matching original count and placement ensure minimal friction and durability.
Hands and Dial: Period-correct or vintage-sourced hands and dials preserve watch authenticity during restoration.
Sourcing and Maintenance Tips
Prioritize original or NOS parts explicitly marked for AS 1395 to ensure correct fit and preserve movement integrity.
Use donor movements as valuable sources for rare or worn components, especially calendar-related parts.
Handle delicate assemblies such as balance, escapement, and rotor with care to avoid damage.
Apply modern synthetic oils sparingly, respecting vintage lubrication standards to maximize movement longevity.
Always verify the calibre number stamped on the main plate before ordering parts to avoid incompatibilities.
Why AS 1395 Spare Parts Matter
Preserves Movement Reliability and Complexity: Authentic parts maintain precise timekeeping and smooth calendar functions.
Enhances Collector Value: Maintaining original or compatible components protects historical significance and aesthetic integrity.
Facilitates Effective Repairs: Well-documented among watchmakers, AS 1395 parts availability supports sustained restoration and servicing.
The A. Schild AS 1395 remains a classic mid-20th-century Swiss automatic calibre with calendar complication. Accurate spare parts sourcing is vital to sustaining its legacy and ensuring these vintage watches operate reliably and authentically.