A. Schild (AS) Calibre 1871 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1871 is a vintage Swiss manual-wind mechanical movement, highly regarded for its reliable performance and classic design. Produced around the early 1970s, it features a sweep second and quickset date, offering practical complications in a compact size. This calibre is valued by collectors and watchmakers for its robustness and efficient mechanics.
Key Technical Highlights
Calibre: AS 1871
Movement Type: Manual winding, mechanical
Diameter: 26 mm (11.5 lignes)
Height: Approximately 3.15 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (vph)
Power Reserve: About 46 hours
Functions: Hours, minutes, sweep seconds, quickset date (set by repeated pushing the crown)
Lift Angle: 52°
Shock Protection: Vintage anti-shock system, typical for its era
Common Spare Parts and Components
Mainspring and Barrel: Essential for consistent and reliable power delivery; new-old-stock (NOS) or original mainsprings recommended to maintain torque and longevity.
Balance Wheel and Balance Staff: Precision parts critical for accurate timekeeping and shock resilience; fitting must be precise to preserve movement reliability.
Setting Mechanism (Stem, Crown, Levers, Springs): Key parts that enable smooth winding, time, and quickset date adjustments; original or compatible stem and crown parts ensure proper function.
Pallet Fork and Escape Wheel: Wear-prone escapement components; sourcing genuine or NOS parts helps maintain smooth operation.
Gear Train Wheels (Minute, Third, Fourth): Often replaced due to wear or damage; typically sourced from donor movements or NOS inventory.
Jewels: Synthetic ruby bearings important for friction reduction; replacements must match original layout.
Hands and Dial Components: Period-correct parts help maintain vintage authenticity and collector appeal.
Sourcing and Maintenance Tips
Always use original, NOS, or donor parts specifically marked for AS 1871 to ensure full compatibility and preservation of movement quality.
Handle fragile components, especially balance assemblies and escapement parts, with care during servicing.
Apply modern synthetic watch oils sparingly, following vintage lubrication standards for longevity and optimal performance.
Verify the calibre number stamped on the main plate before ordering parts to avoid incompatibility.
Donor AS 1871 movements can be valuable resources for rare or worn spare parts.
Why AS 1871 Spare Parts Matter
Authentic parts maintain the calibre’s accuracy, durability, and reliable manual winding function, crucial for dependable vintage watch performance.
Proper restoration with genuine components supports the historical significance and collector value of these classic Swiss manual-wind watches.
Detailed technical specifications and a dedicated watchmaker community facilitate effective parts sourcing and expert servicing.
Maintaining the A. Schild AS 1871 calibre with high-quality spare parts is essential to keep these vintage manual watches running smoothly while honoring their place in Swiss horological heritage.
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Stem, Crown, Hands & Spares might be available for this movement.
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