A. Schild (AS) Calibre 1861 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1861 is a vintage Swiss manual-wind mechanical chronograph movement known for its precision, reliability, and classic design. While it is related to the famous Omega Caliber 1861 (based on Lemania 1873), the AS 1861 itself is notable for manual winding chronograph watches. Proper maintenance with quality spare parts is essential for preserving these vintage timepieces.
Key Technical Highlights
Calibre: AS 1861
Movement Type: Manual winding mechanical chronograph
Diameter: Approximately 26–27 mm (11.5 lignes)
Height: Around 6.87 mm (similar to Omega 1861)
Jewels: 17 to 18 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: About 46 to 48 hours
Functions: Chronograph (central seconds, 30-minute counter), hours, minutes, small seconds
Shock Protection: Vintage anti-shock system
Lift Angle: 52°
Common Spare Parts and Components
Mainspring and Barrel: Critical for steady and reliable power delivery; original or NOS mainsprings ensure consistent torque and durability.
Balance Wheel and Balance Staff: Precise components needed for accurate timekeeping and shock resilience; replacements must be exact fits.
Chronograph Mechanism Parts: Include column wheel, coupling lever, chronograph brake (often made from Delrin or similar polymers), and minute recorder components; high-quality parts critical for smooth chrono operation.
Pallet Fork and Escape Wheel: Wear-prone escapement parts; sourcing original or NOS components maintains smooth and reliable operation.
Gear Train Wheels (Minute, Third, Fourth): Frequently replaced due to wear or damage; typically sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fitting parts essential for smooth winding, time setting, and chronograph controls.
Jewels: Synthetic ruby bearings arranged to minimize friction; replacements should match original layout exactly.
Hands and Dial Components: Period-appropriate parts preserve vintage authenticity and collector appeal.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts clearly marked for AS 1861 or compatible vintage chronograph calibers to ensure proper compatibility.
Handle fragile chronograph components and balance assemblies with care during servicing.
Apply modern synthetic watch oils sparingly, following vintage lubrication standards to optimize performance and longevity.
Always verify the calibre number stamped on the movement main plate before ordering parts to avoid mismatches.
Donor AS 1861 or Lemania 1873 movements can be valuable sources for rare or worn components.
Why AS 1861 Spare Parts Matter
Genuine parts preserve the movement’s chronograph precision, mechanical reliability, and durability, vital for dependable vintage watch function.
Proper servicing with authentic components maintains the historical and collector value of watches using this classic manual-wind chronograph calibre.
Thorough technical documentation and an active watchmaker community support expert repairs and reliable parts sourcing.
Maintaining the A. Schild AS 1861 calibre with quality spare parts ensures these prestigious vintage chronographs continue to perform reliably while preserving their esteemed place in Swiss horology.
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Stem, Crown, Hands & Spares might be available for this movement.
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