A Schild – AS Calibre 1902 Watch spares Parts List
| A Schild – AS Calibre 1902 – Part No. 100 plate (NOS) |
| A Schild – AS Calibre 1902 – Part No. 105 Barrel bridge (NOS) |
| A Schild – AS Calibre 1902 – Part No. 118 Combined bridge (NOS) |
| A Schild – AS Calibre 1902 – Part No. 121 Balance cock (NOS) |
| A Schild – AS Calibre 1902 – Part No. 125 Pallet cock (NOS) |
| A Schild – AS Calibre 1902 – Part No. 163/1 Center pipe (NOS) |
| A Schild – AS Calibre 1902 – Part No. 182 Barrel and cover (NOS) |
| A Schild – AS Calibre 1902 – Part No. 195 Barrel arbor (NOS) |
| A Schild – AS Calibre 1902 – Part No. 200/1 Large driving wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 210 Third wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 227 Sweep second wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 240 Cannon pinion with clam notch (NOS) |
| A Schild – AS Calibre 1902 – Part No. 243 Cannon pinion without clam notch (NOS) |
| A Schild – AS Calibre 1902 – Part No. 255 Hour wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 260 Minute wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 301 Regulator for flat hairspring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 311 Upper cap jewel with end-piece, for balance (NOS) |
| A Schild – AS Calibre 1902 – Part No. 330 Lower cap jewel with end-piece,for balance (NOS) |
| A Schild – AS Calibre 1902 – Part No. 401 Winding stem (NOS) |
| A Schild – AS Calibre 1902 – Part No. 407 Clutch wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 410 Winding pinion (NOS) |
| A Schild – AS Calibre 1902 – Part No. 415 Ratchet wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 420 Crown wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 422 Crown wheel ring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 425 Click (NOS) |
| A Schild – AS Calibre 1902 – Part No. 430 Click spring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 435 Yoke (NOS) |
| A Schild – AS Calibre 1902 – Part No. 440 Yoke spring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 443 Setting lever (NOS) |
| A Schild – AS Calibre 1902 – Part No. 445 Setting Iever spring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 450 Setting wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 468 Cannon pinion guard (NOS) |
| A Schild – AS Calibre 1902 – Part No. 703 Escape wheel and pinion (NOS) |
| A Schild – AS Calibre 1902 – Part No. 710 Jewelled pallet fork (NOS) |
| A Schild – AS Calibre 1902 – Part No. 714 Pallet staff (NOS) |
| A Schild – AS Calibre 1902 – Part No. 721 Complete Balance (NOS) |
| A Schild – AS Calibre 1902 – Part No. 730 Roller (NOS) |
| A Schild – AS Calibre 1902 – Part No. 770 Mainspring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 775 Brake spring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1141/1 Lower bridge for automatic device (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1142 Upper bridge for automatic device (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1143/1 Oscillating weight, mounted (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1155 Lower cock for reduclion gear (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1428 Stop click (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1448 Stop click spring NOS) |
| A Schild – AS Calibre 1902 – Part No. 1470 Reverser spring (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1481 Reduction gear (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1482 Driving gear for crown wheel (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1485/1 Reverser, mounled (NOS) |
| A Schild – AS Calibre 1902 – Part No. 1491 Oscillating weight bolt (NOS) |
A. Schild (AS) Calibre 1902 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1902 is a vintage Swiss automatic mechanical movement produced primarily around the late 1960s to early 1970s. It is known for its reliable performance, practical complications including sweep seconds and day-date display with quickset functionality, and robust build quality. This calibre is favored by collectors and watchmakers for restoring classic automatic wristwatches.
Key Technical Highlights
Calibre: AS 1902
Movement Type: Automatic, mechanical with sweep seconds
Diameter: 26 mm (11.5 lignes)
Height: 5.2 mm
Jewels: 17, 21, or 25 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: Approximately 44 hours
Functions: Hours, minutes, sweep seconds, day and date complications with quickset by repeated crown pushing
Shock Protection: Vintage anti-shock system (commonly Incabloc)
Lift Angle: 52°
Self-Winding: Sophisticated excenter self-winding mechanism with single gear stage
Common Spare Parts and Components
Mainspring and Barrel: Original or new-old-stock (NOS) mainsprings recommended for steady power delivery and longevity.
Balance Wheel and Balance Staff: Precision components vital for accurate timekeeping and shock resistance; parts must fit precisely for reliability.
Rotor Assembly and Bearings: Crucial for efficient automatic winding; worn or damaged components need genuine or NOS replacements.
Pallet Fork and Escape Wheel: Escapement parts prone to wear; sourcing authentic parts ensures smooth operation.
Gear Train Wheels (Minute, Third, Fourth): Often replaced due to wear; sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting parts necessary for smooth winding, time, day, and date settings.
Jewels: Synthetic ruby bearings positioned to reduce friction; replacements must precisely match the original layout.
Hands and Dial Components: Period-correct parts maintain vintage authenticity and collector value.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts specifically marked for AS 1902 to ensure compatibility and preserve movement integrity.
Handle delicate parts such as balance assemblies and escapement components with care during servicing.
Apply modern synthetic watch oils sparingly following vintage lubrication standards to optimize performance and longevity.
Always verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.
Donor AS 1902 movements are valuable sources for rare or worn components.
Why AS 1902 Spare Parts Matter
Genuine parts preserve the calibre’s accuracy, mechanical reliability, and efficient automatic winding, 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 expert servicing and efficient parts sourcing.
Maintaining the A. Schild AS 1902 calibre with quality, authentic spare parts is crucial for ensuring these vintage automatics continue to perform reliably while honoring their place in Swiss horological heritage.
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Stem, Crown, Hands & Spares might be available for this movement.
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