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A. Schild (AS) Calibre 1608 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1608 is a vintage Swiss manual-wind mechanical movement distinguished by its compact size and reliable sweeping seconds functionality. Produced as a small calibre movement, it is favored by collectors and watchmakers working on vintage watches requiring precise restoration.
Key Technical Highlights
Calibre: AS 1608
Movement Type: Manual winding, mechanical
Diameter: Approximately 19.4 mm (8.75 lignes)
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Functions: Hours, minutes, sweeping seconds
Notable Feature: Compact size suitable for smaller watches
Common Spare Parts and Components
Mainspring and Barrel: Critical for stable power delivery; replacement springs must match original specifications for reliable torque and duration.
Balance Wheel and Balance Staff: Delicate precision parts essential for timing accuracy; require exact fit and shock compatibility.
Pallet Fork and Escape Wheel: Escapement components prone to wear, best replaced with original or high-quality new-old-stock (NOS) parts to maintain smooth operation.
Gear Train Wheels: Includes minute, third, and fourth wheels that may experience wear or damage; often sourced from donor calibres or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Must fit exactly for reliable winding and time-setting functions.
Jewels: Synthetic ruby bearings reduce friction; replacements must match the original arrangement and count.
Hands and Dial Components: Vintage-correct parts help preserve authenticity and collector value.
Sourcing and Maintenance Tips
Always use original, NOS, or donor parts specifically marked for the AS 1608 calibre to ensure compatibility and preserve movement integrity.
Handle delicate components like the balance assembly and escapement carefully during servicing due to their small size and sensitivity.
Apply modern synthetic watch oils sparingly, adhering to vintage lubrication standards to ensure longevity and optimal performance.
Verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.
Why AS 1608 Spare Parts Matter
Using authentic or precise compatible parts maintains the calibre’s accuracy, reliability, and operational longevity.
Proper restoration with genuine parts preserves the historical character and collector appeal of vintage small-format manual-wind watches.
The well-documented AS 1608 design facilitates easier sourcing and expert servicing within the vintage watchmaker community.
Maintaining the A. Schild AS 1608 calibre with quality spare parts is essential to keep these refined vintage watches running reliably and authentically.