A. Schild (AS) Calibre 1863 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1863 is a vintage Swiss manual-wind mechanical chronograph movement praised for its precision, reliability, and elegant design. It is closely related to Omega’s Calibre 1861 but distinguished by higher-grade finishing such as rhodium plating and Geneva stripes. This calibre remains highly valued among collectors and watchmakers for its durability and classical chronograph features.
Key Technical Highlights
Calibre: AS 1863
Movement Type: Manual winding, mechanical chronograph
Diameter: Approximately 26 mm (11.5 lignes)
Jewels: 17, 21, or 25 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: Around 42 to 48 hours
Functions: Chronograph with central seconds, 30-minute counter, hours, minutes, small seconds
Shock Protection: Vintage anti-shock system, often Incabloc
Notable Features: Higher-grade finishing compared to Omega 1861, including rhodium plating and decorative Geneva stripes
Common Spare Parts and Components
Mainspring and Barrel: Ensure consistent power delivery; use original or new-old-stock (NOS) mainsprings for durability and optimal torque.
Balance Wheel and Balance Staff: Precision parts crucial for accurate timekeeping and shock resistance; must be exact fits for reliable performance.
Chronograph Mechanism Components: Include column wheel, coupling lever, chronograph brake (often metal), and minute recorder parts; sourcing genuine or NOS parts is essential for smooth chronograph function.
Pallet Fork and Escape Wheel: Wear-prone escapement parts; original or NOS replacements maintain smooth and reliable operation.
Gear Train Wheels (Minute, Third, Fourth): Common replacement parts due to wear; typically sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Precisely fitting parts necessary for smooth winding, time setting, and chronograph control; winding stems such as Part No. 401 are compatible.
Jewels: Synthetic ruby bearings arranged to minimize friction; replacements must match original layout to preserve movement integrity.
Hands and Dial Components: Period-correct parts help maintain vintage authenticity and enhance collector appeal.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts specifically marked for AS 1863 to ensure full compatibility and preserve movement quality.
Handle delicate components, particularly balance assemblies and chronograph parts, with extra care to avoid damage during servicing.
Apply modern synthetic watch oils sparingly, following vintage lubrication standards to prolong longevity and maintain optimal performance.
Always verify the calibre number stamped on the main plate before ordering parts to prevent incompatibility.
Donor movements based on Lemania designs or AS 1863 itself can provide valuable spare components.
Why AS 1863 Spare Parts Matter
Genuine parts maintain the calibre’s chronograph precision, mechanical reliability, and durability, essential for dependable vintage watch operation.
Proper restoration with authentic components preserves the historical significance and collector value of these classic Swiss manual-wind chronographs.
Well-documented technical specifications and an active watchmaker community facilitate expert servicing and reliable parts sourcing.
Maintaining the A. Schild AS 1863 calibre with high-quality, authentic spare parts ensures these distinguished vintage chronographs continue to perform reliably while honoring their esteemed place in Swiss horology.
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Stem, Crown, Hands & Spares might be available for this movement.
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