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A. Schild (AS) Calibre 1510 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1510 is a vintage Swiss manual-wind mechanical movement highly regarded for its reliable construction, compact size, and sweeping seconds function. Produced around the 1950s, it remains a favorite among collectors and watchmakers restoring classic mid-20th-century wristwatches.
Key Technical Highlights
Calibre: AS 1510
Movement Type: Manual wind, mechanical
Diameter: 25.60 mm (11.5 lignes)
Height: Approximately 3.60 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Lift Angle: 52 degrees
Power Reserve: Approximately 39 hours
Functions: Hours, minutes, sweep central seconds
Common Spare Parts and Service Needs
Mainspring and Barrel: Critical for consistent power delivery; replacement mainsprings must match original specifications to maintain proper function.
Balance Wheel and Balance Staff: Vital precision components requiring exact fit, especially considering shock protection compatibility; delicate and prone to damage.
Pallet Fork and Escape Wheel: Key escapement components typically needing replacement due to wear; original or new-old-stock (NOS) parts are recommended.
Gear Train Wheels (Minute, Third, Fourth): Often affected by wear or pivot damage, sourced from donor movements or NOS suppliers.
Setting Components (Stem, Crown, Levers, Springs): Essential for reliable winding and time setting; precise fitting to AS 1510 dimensions is necessary.
Jewels: Synthetic ruby bearings placed accurately to reduce friction; replacements must correspond in count and position.
Hands and Dial: Period-correct or original hands and dials help maintain the watch’s authentic vintage appearance.
Sourcing and Maintenance Tips
Prioritize original, NOS, or donor parts explicitly marked for AS 1510 to ensure compatibility and authenticity.
Handle delicate components, especially the balance wheel and escapement, with great care during servicing.
Use modern synthetic watch oils sparingly, following vintage lubrication standards for longevity and performance.
Always verify the calibre number stamped on the main plate before ordering spare parts to avoid incompatibility.
Why AS 1510 Spare Parts Matter
Maintaining genuine or compatible parts ensures the calibre’s accuracy, reliability, and preserves its historic value.
Proper restoration using authentic spares sustains collector appeal and vintage character.
The AS 1510 is well documented in watchmaker references, facilitating parts sourcing and technical support.
Keeping the A. Schild AS 1510 calibre serviced with quality spare parts is essential for preserving these classic Swiss manual-wind watches’ reliable function and collectible status.