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A. Schild (AS) Calibre 1396 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1396 is a vintage Swiss automatic mechanical movement, produced during the mid-20th century. It is valued for its robust construction, reliable automatic winding system, and inclusion of calendar functions often integrated alongside moon phase pushers. This calibre remains popular among collectors and watchmakers specializing in restoration of vintage Swiss watches.
Key Technical Highlights
Calibre: AS 1396
Movement Type: Automatic, self-winding mechanical
Diameter: 26 mm (11.5 lignes)
Height: Approximately 7 mm
Jewels: Typically 17 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (vph)
Power Reserve: Around 45 hours
Functions: Hours, minutes, sweep seconds, calendar functions including date and potentially moon phase (with pushers on case side)
Shock Protection: Basic anti-shock features typical of the era
Stem and Crown: Specific to movement size and function, exact fit required
Common Spare Parts and Service Components
Mainspring and Barrel: Essential for consistent power delivery; fatigue or breakage necessitates replacement with exact fit parts.
Balance Wheel and Balance Staff: Precision parts that affect timekeeping accuracy and must be replaced with compatible units.
Rotor Assembly: Integral to automatic winding; worn rotor bearings or axles impair winding efficiency and need servicing or replacement.
Pallet Fork and Escape Wheel: Escapement components prone to regular wear; sourcing genuine or compatible parts ensures smooth running.
Calendar and Moon Phase Mechanism Components: Includes pushers, date wheels, day disks, springs, and cams necessary for proper calendar and moon phase operation.
Wheels (Minute, Third, Fourth): Common wear points, often replaced using donor movements or NOS parts.
Setting Mechanism (Stem, Crown, Levers): Critical for winding, time and calendar setting; must fit precisely for reliable function.
Jewels: Synthetic ruby bearings matched to original positions to reduce friction and wear.
Hands and Dial: Period-correct items to maintain authenticity during restoration.
Sourcing and Maintenance Tips
Use original or NOS parts explicitly made for AS 1396 to guarantee fit and authenticity.
Donor AS 1396 movements are valuable for rare parts, including calendar modules and rotor assemblies.
Handle the balance and automatic winding assemblies with care due to their delicate nature.
Lubricate sparingly with modern synthetic oils while respecting vintage servicing standards.
Confirm the calibre number stamped on the main plate before ordering parts.
Why AS 1396 Spare Parts Matter
Preserving the movement’s automatic winding reliability and accurate calendar complications depends on authentic, quality parts.
Maintains the collector and repair value of vintage Swiss watches containing this calibre.
Well-documented within watchmaker communities, allowing effective servicing and parts sourcing.
The A. Schild AS 1396 is a classic mid-20th-century Swiss automatic calibre with calendar features, where sourcing accurate spare parts is essential to preserving its reliability, authenticity, and lasting heritage.