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A. Schild (AS) Calibre 1361 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1361 is a vintage Swiss automatic mechanical movement highly regarded for its robust design and reliable automatic winding. Produced around the 1950s, this calibre features a classic sweep seconds function and remains a favored choice among collectors and watchmakers restoring mid-20th-century wristwatches.
Key Technical Highlights
Calibre: AS 1361 (including AS 1361N variant)
Movement Type: Automatic, self-winding mechanical
Diameter: Approximately 25.6 mm (11.5 lignes)
Height: 5.75 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Around 38 hours
Lift Angle: 52 degrees
Functions: Central hours, central minutes, sweeping central seconds
Shock Protection: Incabloc anti-shock system
Hand Sizes: Hour – 1.3 mm, Minute – 0.9 mm, Seconds – 0.2 mm
Additional Info: Hand-windable in addition to automatic winding; no hacking function
Common Spare Parts and Components
Mainspring and Barrel: Critical for power delivery; fatigue from age requires exact replacement for consistent performance.
Balance Wheel and Balance Staff: Essential for timing accuracy and prone to shock damage; precise matching parts needed for reliable operation.
Rotor Assembly and Bearings: Key for automatic winding function; wear here can reduce efficiency and requires specialist replacement.
Pallet Fork and Escape Wheel: Escapement parts subjected to wear; sourcing genuine or compatible parts is crucial.
Gear Train Wheels (Center, Third, Sweep Second): Tooth wear and pivot damage common; donor movements or new-old-stock (NOS) parts often used.
Setting Mechanism (Stem, Crown, Levers, Springs): Necessary for reliable winding and time adjustment; must be dimensionally accurate.
Jewels: Synthetic ruby bearings must match original placement for low friction and durability.
Hands and Dial Components: Period-correct parts maintain authenticity and aesthetic integrity during restoration.
Sourcing and Maintenance Tips
Prioritize original or NOS spare parts labeled for AS 1361 to ensure compatibility and genuine quality.
Salvage donor movements are valuable sources for rare or worn components such as balance assemblies and gear wheels.
Handle balance and rotor assemblies carefully due to their delicate nature and anti-shock components.
Use modern synthetic oils sparingly, adhering to vintage lubrication standards to prolong movement longevity.
Always verify the calibre number stamped on the main plate before ordering parts.
Why AS 1361 Spare Parts Matter
Preserving the Movement’s Reliability: Using authentic parts retains the renowned robust automatic winding and accurate timekeeping.
Maintaining Collector Value: Correct restoration with original components preserves vintage appeal and historical integrity.
Facilitating Effective Service: AS 1361 is well documented and recognized among watchmakers, making parts sourcing and servicing more accessible.
The A. Schild AS 1361 remains a classic Swiss automatic calibre whose legacy depends on careful sourcing and fitting of quality spare parts to keep these elegant vintage watches running reliably and authentically.