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A. Schild (AS) Calibre 1194 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1194 is a vintage Swiss manual-wind mechanical movement introduced in the 1940s. It is known for its robust engineering, reliable performance, and classic design, commonly used in mid-20th-century wristwatches. Proper sourcing of authentic spare parts is vital to maintain its functionality and preserve originality.
Key Technical Highlights
Calibre: AS 1194
Movement Type: Manual wind, mechanical
Diameter: 11.5 lignes (approx. 25.6 mm)
Height: 4.90 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 43 hours
Lift Angle: 52 degrees (commonly cited)
Functions: Hours, minutes, sweeping central seconds hand
Production Era: Circa 1940s
Hand Sizes: 1.30 mm for hour hand, 0.85 mm for minute hand, 0.22 mm for seconds hand
Common Spare Parts and Service Components
Mainspring and Barrel: Crucial for reliable power delivery; aged mainsprings often fatigue and require precise replacement.
Balance Wheel and Balance Staff: Key to accurate timekeeping, these delicate parts are prone to shock damage and wear. Compatible or original assemblies are recommended.
Pallet Fork and Escape Wheel: Escapement components subject to wear; authentic or well-fitting replacements ensure smooth operation.
Gear Train Wheels: Minute, third, and fourth wheels may require replacement due to tooth or pivot damage; often sourced from donor movements or new-old-stock (NOS).
Stem, Crown, and Setting Mechanism: These components support winding and time-setting and tend to wear out over time; proper fit is necessary.
Jewels: Replacement ruby bearings must match the original to maintain friction reduction and durability.
Hands and Dial: Period-accurate hands and dials preserve watch authenticity during restoration; sourcing may require specialist suppliers.
Sourcing and Maintenance Tips
Donor Movements: Non-working AS 1194 movements are valuable for harvesting hard-to-find parts such as balance assemblies and wheels.
Original and NOS Parts: Prefer spare parts explicitly designed for AS 1194 to ensure compatibility and maintain authenticity.
Handling: The movement has limited or no shock protection; careful handling of balance and escapement parts during servicing is important.
Lubrication: Use high-quality modern synthetic oils sparingly according to vintage watch servicing standards.
Identification: The calibre number is usually stamped on the main plate or near the balance cock—accurate identification ensures correct parts ordering.
Why AS 1194 Spare Parts Matter
Reliability and Precision: Maintaining original or authentic parts preserves the AS 1194’s praised reliability and accurate timekeeping.
Collector Value: Proper restoration with genuine spare parts enhances historical value and functional longevity.
Watchmaker Familiarity: AS 1194 remains a well-regarded vintage movement, supported by knowledgeable watchmakers and a steady parts market.
The A. Schild AS 1194 exemplifies the technical excellence of mid-20th-century Swiss watchmaking. Sourcing quality spare parts is essential for keeping these timepieces authentic, functional, and collectible.