A Schild – AS Calibre 1920 Watch spares Parts List
| A Schild – AS Calibre 1920 – Part No. 100 plate (NOS) |
| A Schild – AS Calibre 1920 – Part No. 105 Barrel bridge (NOS) |
| A Schild – AS Calibre 1920 – Part No. 118 Combined bridge (NOS) |
| A Schild – AS Calibre 1920 – Part No. 121 Balance cock (NOS) |
| A Schild – AS Calibre 1920 – Part No. 125 Pallet cock (NOS) |
| A Schild – AS Calibre 1920 – Part No. 163/1 Center pipe (NOS) |
| A Schild – AS Calibre 1920 – Part No. 182 Barrel and cover (NOS) |
| A Schild – AS Calibre 1920 – Part No. 195 Barrel arbor (NOS) |
| A Schild – AS Calibre 1920 – Part No. 200/1 Large driving wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 210 Third wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 227 Sweep second wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 240 Cannon pinion with clam notch (NOS) |
| A Schild – AS Calibre 1920 – Part No. 243 Cannon pinion without clam notch (NOS) |
| A Schild – AS Calibre 1920 – Part No. 255 Hour wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 260 Minute wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 309/3 Regulator for adjusting device (NOS) |
| A Schild – AS Calibre 1920 – Part No. 338 Upper cap jewels with end-piece (NOS) |
| A Schild – AS Calibre 1920 – Part No. 341 Lower cap jewel with end-piece (NOS) |
| A Schild – AS Calibre 1920 – Part No. 358 Adjuster for regulator (NOS) |
| A Schild – AS Calibre 1920 – Part No. 401 Winding stem (NOS) |
| A Schild – AS Calibre 1920 – Part No. 407 Clutch wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 410 Winding pinion (NOS) |
| A Schild – AS Calibre 1920 – Part No. 415 Ratchet wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 420 Crown wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 422 Crown wheel ring (NOS) |
| A Schild – AS Calibre 1920 – Part No. 425 Click (NOS) |
| A Schild – AS Calibre 1920 – Part No. 430 Click spring (NOS) |
| A Schild – AS Calibre 1920 – Part No. 435 Yoke (NOS) |
| A Schild – AS Calibre 1920 – Part No. 440 Yoke spring (NOS) |
| A Schild – AS Calibre 1920 – Part No. 443 Setting lever (NOS) |
| A Schild – AS Calibre 1920 – Part No. 445 Setting Iever spring (NOS) |
| A Schild – AS Calibre 1920 – Part No. 450 Setting wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 468 Cannon pinion guard (NOS) |
| A Schild – AS Calibre 1920 – Part No. 482 Setting lever return-spring (NOS |
| A Schild – AS Calibre 1920 – Part No. 705 Escape wheel and pinion (NOS) |
| A Schild – AS Calibre 1920 – Part No. 710 Jewelled pallet fork (NOS) |
| A Schild – AS Calibre 1920 – Part No. 714 Pallet staff (NOS) |
| A Schild – AS Calibre 1920 – Part No. 721 Complete Balance (NOS) |
| A Schild – AS Calibre 1920 – Part No. 730 Roller (NOS) |
| A Schild – AS Calibre 1920 – Part No. 771 Mainspring with brake spring (NOS) |
| A Schild – AS Calibre 1920 – Part No. 775 Brake spring (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1141/1 Lower bridge for automatic device (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1142 Upper bridge for automatic device (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1143/1 Oscillating weight, mounted (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1428 Stop click (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1480 Winding-up wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1482 Driving gear for crown wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1488 Pawl winding wheel, complete (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1496 Oscillating weight axle (NOS) |
| A Schild – AS Calibre 1920 – Part No. 1555 Bolt for winding-up wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2535 Date indicator guard (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2555 Calendar driving wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2557 Date indicator (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2558 Double-toothing hour wheel (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2561/2 Day star with disk not transferred (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2575 Date Jumper spring (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2576 Date Jumper (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2577 Day jumper (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2608 Unlocking yoke lever (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2632/1 Unlocking yoke for date indicator, mounted (NOS) |
| A Schild – AS Calibre 1920 – Part No. 2633 Unlocking yoke for date indicator (NOS) |
| A Schild – AS Calibre 1920 – Part No. 9433 Stop lever (NOS) |
| A Schild – AS Calibre 1920 – Part No. 9435 Lever for stop lever (NOS) |
| A Schild – AS Calibre 1920 – Part No. 9473 Stop lever spring (NOS) |
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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Stem, Crown, Hands & Spares might be available for this movement.
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