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A. Schild (AS) Calibre 1650 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1650 is a vintage Swiss manual-wind mechanical movement known for its compact size and sweep seconds feature. It is valued for its reliability, precision, and robustness, making it a favored choice for restoration and servicing within the vintage watch community.
Key Technical Highlights
Calibre: AS 1650
Movement Type: Manual winding, mechanical
Diameter: Approximately 23.30 mm (10.5 lignes)
Functions: Hours, minutes, sweep seconds
Shock Protection: Included to protect against impacts and enhance reliability
Jewels: Typically features synthetic ruby jewels
Beat Rate: Standard vintage rate, typically 18,000 vibrations per hour (vph)
Notable Features: Sweep second hand for continuous and precise seconds tracking
Common Spare Parts and Components
Mainspring and Barrel: Essential for storing and delivering stable power; replacements need to match original dimensions exactly to maintain torque and duration.
Balance Wheel and Balance Staff: Delicate, precision components vital for accurate timekeeping and shock resistance; require exact fit and quality replacements.
Pallet Fork and Escape Wheel: Frequently worn escapement parts; sourcing original or quality new-old-stock (NOS) parts is critical for smooth operation.
Gear Train Wheels (Minute, Third, Fourth): Subject to wear; often salvaged from donor movements or sourced from NOS stocks.
Setting Mechanism (Stem, Crown, Levers, Springs): Must fit precisely to support reliable winding and time-setting functions.
Jewels: Synthetic ruby bearings strategically placed to reduce friction; replacements must match original configuration for optimum movement efficiency.
Hands and Dial Components: Period-correct parts improve authentic restoration and maintain collector value.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts specifically marked for AS 1650 to ensure compatibility and maintain movement integrity.
Handle balance wheel and escapement components with care during servicing due to their delicacy and essential precision role.
Apply modern synthetic watch oils sparingly following vintage lubrication guidelines to optimize movement longevity.
Always verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.
Why AS 1650 Spare Parts Matter
Authentic spare parts maintain the calibre’s accuracy, reliability, and vintage character, which are fundamental to the movement’s proper function and longevity.
Proper servicing with genuine components preserves the mechanical integrity and collector appeal of vintage timepieces featuring the AS 1650.
The AS 1650 movement’s documented design supports sourcing and expert servicing within the watchmaker community.
Maintaining the A. Schild AS 1650 calibre with quality spare parts is vital to ensure these compact, vintage manual-wind watches continue running reliably and authentically.