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A. Schild (AS) Calibre 1568 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1568 is a vintage Swiss manual-wind mechanical movement notable for combining an alarm complication with a date function. Produced primarily in the mid-1950s and 1960s, this calibre is prized for its robust reliability, 18,000 vibrations per hour beat rate, and approximately 46 hours power reserve. It is closely related to the popular AS 1475 alarm calibre but adds a date display.
Key Technical Highlights
Calibre: AS 1568
Movement Type: Manual winding, mechanical with alarm and date
Diameter: 25.60 mm (11.5 lignes)
Height: Approximately 6.90 mm
Jewels: Typically 17 or 21 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: About 46 hours
Functions: Hours, minutes, sweeping seconds, 12-second alarm, date (set by movement time change)
Shock Protection: Typical for vintage manual-wind alarm movements
Production Era: Circa 1956 and following years
Common Spare Parts and Service Components
Mainspring and Barrel: Critical for stable power delivery to both time and alarm barrels; must match precise dimensions.
Balance Wheel and Balance Staff: Vital for accurate timing; delicate and require exact fitment considering shock protection.
Alarm Mechanism Parts: Alarm spring, hammer, and associated components essential for alarm function operation.
Date Mechanism Components: Date wheels and date setting cams or levers need careful sourcing for full functionality.
Pallet Fork and Escape Wheel: Key escapement parts subject to wear; original or high-quality NOS replacements ensure smooth operation.
Gear Train Wheels (Minute, Third, Fourth): Worn gear wheels are common repairs, typically sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fit parts are necessary for winding, time setting, alarm setting, and date changes.
Jewels: Synthetic ruby bearings must match original count and placement for low friction and durability.
Hands and Dial: Period-appropriate parts help maintain vintage authenticity.
Sourcing and Maintenance Tips
Use original or NOS parts explicitly marked for AS 1568 to ensure authenticity and compatibility.
Donor AS 1568 or AS 1475 movements can be invaluable for sourcing rare alarm and date-related components.
Handle delicate assemblies caring for the balance, escapement, and alarm mechanisms during servicing.
Use modern synthetic watch oils sparingly, respecting vintage lubrication standards to maximize longevity.
Always verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.
Why AS 1568 Spare Parts Matter
Maintaining genuine parts preserves the movement’s accuracy, alarm reliability, and date function integrity.
Proper restoration safeguards the collector value and mechanical heritage of these classic alarm watch movements.
The AS 1568’s documented technical aspects support effective servicing and parts sourcing within watchmaker communities.
Quality spare parts sourcing is essential to keep the A. Schild AS 1568 manual-wind alarm and date movement operating reliably and authentically, preserving its place in vintage Swiss horology.