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A. Schild (AS) Calibre 1986 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1986 is a Swiss automatic movement, renowned for its robust day/date complication and reliable sweep seconds. Introduced circa 1965, it is a mainstay in vintage Swiss wristwatches, admired for its solid engineering and practical period design.
Key Technical Highlights
Calibre: AS 1986
Movement Type: Automatic, mechanical
Diameter: 26 mm (11.5 lignes)
Height: 5.25 mm
Jewels: 17, 21, or 25 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: ~42 hours
Functions: Hours, minutes, sweep seconds, quickset day/date (date set by changing time between ~20:20 and 24h)
Shock Protection: Typically Incabloc or equivalent
Lift Angle: 52°
Common Spare Parts and Components
Mainspring and Barrel: Original or NOS mainspring and barrel enable consistent power delivery and preserve torque stability.
Balance Wheel and Balance Staff: Precision parts, vital for timing accuracy and shock resistance; must match spec exactly.
Automatic Rotor & Bearings: Key for sustained winding action; genuine or NOS replacements ensure smooth operation.
Pallet Fork and Escape Wheel: Escapement components that wear over time; replacing with authentic/NOS parts maintains performance.
Gear Train Wheels: Minute, third, fourth sweep wheels; replacement parts sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting for winding, time, and day/date adjustments. Winding stem (part 401) and winding pinion (part 410) are standard spares.
Jewels: Synthetic ruby bearings reduce friction; replacements must fit original layout for movement integrity.
Hands and Dial Components: Period-correct hands, dials, and discs essential for maintaining vintage character and collector value.
Date & Day Components: Includes date indicator guard, calendar driving wheel, date jumper spring, and unlocking yoke for day/date reliability.
Sourcing and Maintenance Tips
Always use original, NOS, or donor parts specific to AS 1986 for compatibility and quality.
Handle balance assemblies, escapement, and automatic mechanisms with care when servicing.
Use modern synthetic watch oils sparingly per vintage lubrication guidelines to optimize longevity.
Always confirm the calibre number stamped on the main plate before ordering parts to prevent mismatches.
Donor AS 1986 movements are valuable sources for rare, discontinued, or worn components.
Why AS 1986 Spare Parts Matter
Proper parts ensure accurate timekeeping, reliable automatic winding, and functional day/date complications—key traits for restored, collectible watches.
Using authentic components preserves the historical and collector value fundamental to vintage Swiss horology.
Strong technical documentation and an active restoration community support efficient repairs and parts sourcing.
Maintaining your A. Schild AS 1986 watch with genuine spare parts ensures its longevity, reliability, and enduring value in the Swiss watchmaking legacy.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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