A. Schild (AS) Calibre 1892 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1892 is a vintage Swiss automatic mechanical movement valued for its reliable performance and classic features. Produced around the mid-20th century, this calibre is appreciated for its robust construction, efficient automatic winding, and useful complications such as sweep seconds and date display.
Key Technical Highlights
Calibre: AS 1892
Movement Type: Automatic, mechanical
Diameter: 26 mm (11.5 lignes)
Jewels: 17, 21, or 25 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (vph)
Power Reserve: Approximately 42 hours
Functions: Hours, minutes, sweep seconds, date
Shock Protection: Vintage Incabloc or similar anti-shock system
Lift Angle: 52°
Rotor: Ball-bearing type for smooth and efficient automatic winding
Common Spare Parts and Components
Mainspring and Barrel: Core power components; NOS replacements recommended for stable torque and longevity.
Balance Wheel and Balance Staff: Precision shock-resistant parts vital for timekeeping accuracy; must be exact fit to maintain performance.
Rotor Assembly and Bearings: Central to automatic winding efficiency; replace worn parts with genuine or high-quality NOS components.
Pallet Fork and Escape Wheel: Escapement parts prone to wear; sourcing original or quality NOS components preserves smooth operation.
Gear Train Wheels (Minute, Third, Fourth): Commonly replaced due to wear; typically sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Accurate fit essential for smooth winding, time setting, and date adjustment; winding stem Part No. 401 compatible.
Jewels: Synthetic ruby bearings to reduce friction; replacements must precisely match original layout.
Hands and Dial Components: Period-correct parts maintain vintage authenticity and collector appeal.
Sourcing and Maintenance Tips
Use only original, NOS, or donor parts specifically marked for AS 1892 to ensure compatibility and preserve movement quality.
Handle fragile parts such as balance assemblies, escapement, and rotor with care during servicing.
Apply modern synthetic watch oils sparingly in accordance with vintage lubrication standards for longevity and reliability.
Always verify the calibre number stamped on the main plate before ordering parts to avoid compatibility issues.
Donor AS 1892 movements serve as valuable sources for rare or worn spare components.
Why AS 1892 Spare Parts Matter
Genuine parts maintain the calibre’s accuracy, reliability, and efficient automatic winding, crucial for consistent watch performance.
Proper restoration with authentic components preserves the historical significance and collector value of these classic Swiss automatic wristwatches.
Well-documented technical specifications and an active watchmaker community facilitate efficient parts sourcing and expert repairs.
Maintaining the A. Schild AS 1892 calibre with quality spare parts is essential for ensuring these vintage automatic watches continue to perform reliably while honoring their Swiss horological legacy.
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Stem, Crown, Hands & Spares might be available for this movement.
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