A. Schild (AS) Calibre 1862 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1862 is a vintage Swiss automatic mechanical movement known for its reliable performance, classic automatic winding, and date complication. Produced around the 1970s, this calibre is valued for its robust construction, efficient automatic mechanism, and practical features like sweep seconds and date display at 3 o’clock.
Key Technical Highlights
Calibre: AS 1862
Movement Type: Automatic, mechanical with sweep seconds and date
Diameter: 25.60 mm (11.5 lignes)
Height: Approximately 4.10 mm
Jewels: 17, 21, or 25 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (vph)
Power Reserve: Around 42 hours
Functions: Hours, minutes, sweep seconds, date at 3 o’clock
Shock Protection: Typical vintage anti-shock system, such as Incabloc
Notable Features: Indirectly driven minute mechanism for smooth time display
Common Spare Parts and Components
Mainspring and Barrel: Crucial for stable power transmission; use original or new-old-stock (NOS) mainsprings for correct torque and durability.
Balance Wheel and Balance Staff: Precision components essential for accurate timekeeping and shock resistance; must be exact fits to preserve movement performance.
Rotor Assembly and Bearings: Central to efficient automatic winding; worn rotors and bearings require genuine or high-quality NOS replacements for smooth operation.
Pallet Fork and Escape Wheel: Wear-prone escapement parts; sourcing original or NOS components ensures smooth and reliable escapement function.
Gear Train Wheels (Minute, Third, Fourth): Frequently replaced due to use; normally sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Must fit precisely to allow smooth winding, time setting, and date adjustment.
Jewels: Synthetic ruby bearings arranged to reduce friction; replacements must match the original layout.
Hands and Dial Components: Period-correct parts maintain vintage authenticity and collector appeal.
Sourcing and Maintenance Tips
Always use original, NOS, or donor parts specifically identified for AS 1862 for compatibility and quality assurance.
Handle delicate components like balance wheels, escapements, and rotors with care during servicing.
Apply modern synthetic watch oils sparingly, following vintage lubrication standards for optimal longevity.
Verify the calibre number stamped on the main plate before ordering parts to avoid mismatches.
Donor AS 1862 movements can serve as valuable sources for rare or worn parts.
Why AS 1862 Spare Parts Matter
Using genuine parts preserves the calibre’s accuracy, reliability, and efficient automatic winding, crucial for dependable timekeeping.
Proper restoration with authentic components maintains the historical significance and collector value of these mid-century Swiss automatic watches.
Detailed technical specs and support from an active watchmaker community make sourcing and servicing easier.
Maintaining the A. Schild AS 1862 calibre with quality spare parts is essential for preserving the reliable performance and legacy of these vintage automatic wristwatches.
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Stem, Crown, Hands & Spares might be available for this movement.
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