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A. Schild (AS) Calibre 1680 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1680 is a vintage Swiss automatic mechanical movement notable for its reliability, compact size, and classic automatic winding system. Produced around the early 1960s, this calibre features 17 to 25 jewels, runs at 18,000 vibrations per hour (vph), and offers about a 41-hour power reserve. It is highly regarded by collectors and watchmakers restoring mid-century automatic watches.
Key Technical Highlights
Calibre: AS 1680
Movement Type: Automatic, self-winding mechanical
Diameter: Approximately 25.6 mm (11.5 lignes)
Height: Around 5.2 mm
Jewels: 17, 21, or 25 synthetic ruby jewels depending on version
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 41 hours
Functions: Hours, minutes, sweeping seconds, automatic winding
Shock Protection: Incabloc or equivalent vintage anti-shock system
Production Era: Circa early 1960s
Common Spare Parts and Components
Mainspring and Barrel: Crucial for energy storage; replacement mainsprings must fit original specifications for consistent torque and duration.
Balance Wheel and Balance Staff: Delicate precision parts critical for timing accuracy and shock resistance; require exact fitment and compatible shock protection.
Rotor Assembly and Bearings: Key components for automatic winding efficiency; worn rotor axles or bearings need accurate replacement for sustained performance.
Pallet Fork and Escape Wheel: Wear-prone escapement parts; original or quality new-old-stock (NOS) parts ensure smooth operation.
Gear Train Wheels (Minute, Third, Fourth): These wheels commonly require replacement due to wear or pivot damage; donor movements and NOS parts are typical sources.
Setting Mechanism (Stem, Crown, Levers, Springs): Must fit AS 1680 specifications closely to ensure reliable winding and time setting.
Jewels: Synthetic ruby bearings positioned to minimize friction and wear; replacements must match original count and arrangement.
Hands and Dial Components: Period-correct parts help maintain authentic vintage appearance and collector value.
Sourcing and Maintenance Tips
Prefer original, NOS, or donor parts specifically marked for AS 1680 to guarantee compatibility and preserve movement integrity.
Donor movements are valuable sources for hard-to-find or worn components, especially rotor assemblies and escapement parts.
Take special care handling delicate assemblies such as the balance wheel and rotor during servicing.
Use modern synthetic watch oils sparingly, following vintage lubrication standards to prolong movement life and performance.
Always verify the calibre number stamped on the main plate before ordering parts to prevent compatibility issues.
Why AS 1680 Spare Parts Matter
Authentic or precise compatible parts maintain the calibre’s accuracy, automatic winding reliability, and durability.
Proper restoration with genuine components preserves the historical value and collector appeal of these classic Swiss automatic movements.
The detailed technical documentation and community expertise surrounding AS 1680 aids in reliable sourcing and expert servicing.
Maintaining the A. Schild AS 1680 calibre with quality spare parts is essential to keep these robust vintage automatic movements running reliably and preserving their place in Swiss watchmaking heritage.