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A. Schild (AS) Calibre 1430 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1430 is a vintage Swiss manual-wind mechanical movement produced between 1955 and 1962, known for its robustness, reliable sweep seconds hand, and Incabloc shock protection. With a power reserve of approximately 41 hours and a beat rate of 18,000 vibrations per hour, it is popular among collectors and watchmakers restoring mid-20th-century wristwatches.
Key Technical Highlights
Calibre: AS 1430
Movement Type: Manual wind, mechanical
Diameter: 26 mm (11.5 lignes)
Height: 4.5 mm
Jewels: 17 or 21 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 41 hours
Shock Protection: Incabloc system
Functions: Hours, minutes, sweeping central seconds
Common Spare Parts and Service Components
Mainspring and Barrel: Essential for power delivery; replacement mainsprings must match exact dimensions for proper function.
Balance Wheel and Balance Staff: Critical precision components vulnerable to shock damage; authentic or compatible replacements ensure accurate timekeeping.
Pallet Fork and Escape Wheel: Wear-prone escapement parts requiring original or compatible spares to maintain smooth operation.
Wheels (Minute, Third, Fourth): Essential gear train wheels subject to wear; often sourced from donor movements or new-old-stock (NOS).
Stem, Crown, and Setting Mechanism Components: Crucial for winding and time-setting functions; precise fitment needed.
Jewels: Synthetic ruby bearings must match the original count and placement for low friction and durability.
Hands and Dial Components: Period-correct hands and dials preserve authenticity and collector appeal.
Sourcing and Maintenance Tips
Prioritize original, NOS, or donor parts explicitly marked for AS 1430 to ensure compatibility and authenticity.
Salvage donor movements to source rare components like balance staffs, ratchet wheels, and stems.
Handle balance and escapement assemblies with care due to their delicate nature.
Use modern synthetic watch oils sparingly, following vintage lubrication standards to maximize longevity.
Confirm the calibre number stamped on the main plate before ordering parts to avoid errors.
Why AS 1430 Spare Parts Matter
Maintains Reliability: Authentic parts preserve the movement’s dependable timekeeping and robust manual winding operation.
Preserves Collector Value: Correct restoration ensures historical and market value retention.
Facilitates Repair: The AS 1430 is well-documented among watchmakers, enabling sourcing and servicing in vintage watch communities.
Sourcing quality spare parts is essential to keep the A. Schild AS 1430 movement running reliably and authentically, securing its heritage as a classic Swiss manual-wind timepiece.