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A. Schild (AS) Calibre 1336 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1336 is a vintage Swiss automatic mechanical movement known for its robust construction, reliable automatic winding, and sweeping seconds function. Produced around the 1950s, it is prized by collectors and watchmakers restoring mid-20th-century wristwatches.
Key Technical Highlights
Calibre: AS 1336
Movement Type: Automatic winding, mechanical
Diameter: Approximately 25.38 mm (11.25 lignes)
Height: 5.75 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 38 hours
Functions: Hours, minutes, sweeping central seconds
Shock Protection & Winding: Incorporated automatic winding system with a yoke-type mechanism typical of the era
Common Spare Parts and Service Components
Mainspring and Barrel: Essential for reliable power storage; fatigued mainsprings require exact replacements to ensure consistent performance.
Balance Wheel and Balance Staff: Critical for timing precision; delicate parts prone to shock damage that must be matched precisely for compatibility.
Rotor Assembly: Key to automatic winding functionality; wear or damage to the rotor axle or bearings hampers winding efficiency.
Pallet Fork and Escape Wheel: Frequently worn escapement components requiring original or compatible parts to maintain smooth escapement action.
Gear Train Wheels: Minute, third, and fourth wheels can suffer wear or damage; often sourced from donor movements or new-old-stock (NOS).
Stem, Crown, Setting Lever & Springs: Vital for winding and time-setting; must fit the AS 1336 dimensions exactly.
Jewels: Synthetic ruby bearings reduce friction and wear; replacements have to match original count and placement.
Hands and Dial: Period-correct components preserve authenticity; often sourced from specialist vintage suppliers.
Sourcing and Maintenance Tips
Use original or NOS spare parts explicitly marked for AS 1336 to ensure perfect fit and authenticity.
Salvage donor movements are a valuable source for rare or worn components.
Careful handling during servicing is essential due to the delicate balance and rotor assembly.
Apply modern synthetic oils sparingly, adhering to vintage watch lubrication standards to maximize longevity.
Confirm the calibre number stamped on the main plate before ordering parts to avoid mismatches.
Why AS 1336 Spare Parts Matter
Maintaining original or compatible parts preserves precise timekeeping and reliable automatic winding.
Correct restoration enhances collector value and maintains the historical integrity of mid-century Swiss watches.
The AS 1336 remains well-regarded among vintage watchmakers, facilitating availability of technical data and parts.
Sourcing quality spare parts is crucial for sustaining the A. Schild AS 1336’s legacy as a durable and collectible automatic movement of Swiss horology.