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A. Schild (AS) Calibre 1715 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1715 is a vintage Swiss manual-wind mechanical movement treasured for its robust design and reliability. This calibre measures approximately 25.60 mm (11.5 lignes) in diameter and features the classic functions of hours, minutes, and sweep seconds. It commonly contains 17 synthetic ruby jewels and runs at 18,000 vibrations per hour (vph). The movement is favored by collectors and watchmakers restoring mid-20th-century manual-wind wristwatches.
Key Technical Highlights
Calibre: AS 1715
Movement Type: Manual winding, mechanical with sweep seconds
Diameter: 25.60 mm (11.5 lignes)
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Functions: Hours, minutes, sweep seconds
Shock Protection: Standard vintage anti-shock system (such as Incabloc)
Height: Typically around 4.00 mm (standard for similar AS calibres)
Common Spare Parts and Components
Mainspring and Barrel: Vital for storing and delivering steady power; replacement parts must accurately match original specifications for proper torque and longevity.
Balance Wheel and Balance Staff: Delicate and precision components essential for accurate timekeeping and shock absorption; require exact fit and high-quality compatible replacements.
Pallet Fork and Escape Wheel: Wear-prone escapement parts where sourcing original or quality new-old-stock (NOS) components ensures reliable operation.
Gear Train Wheels (Minute, Third, Fourth): Often replaced due to wear or pivot damage; typically sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Requires precise fitting to maintain smooth winding and time-setting functions. Winding stems are available as original Swiss-made parts for AS 1715.
Jewels: Synthetic ruby bearings arranged to reduce friction; replacements must correspond to original layout and number to preserve movement integrity.
Hands and Dial Components: Period-correct parts uphold vintage authenticity and collector value.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts explicitly marked for AS 1715 to guarantee compatibility and maintain movement integrity.
Handle fragile components, especially the balance wheel and escapement, with care during servicing to avoid damage.
Apply modern synthetic watch oils sparingly, following vintage lubrication protocols to optimize movement longevity and performance.
Always verify the calibre number stamped on the main plate before ordering spare parts to avoid mismatches.
Donor AS 1715 movements provide valuable sources for rare or worn components.
Why AS 1715 Spare Parts Matter
Genuine parts preserve the calibre’s accuracy, reliability, and vintage character crucial for proper function and restoration.
Proper servicing with authentic components maintains the historical significance and collector appeal of these classic manual-wind Swiss watches.
The well-documented technical details and active vintage watchmaker community facilitate efficient parts sourcing and expert repairs.
Maintaining the A. Schild AS 1715 calibre with quality spare parts ensures these refined vintage manual-wind watches operate reliably while preserving their important place in Swiss horological heritage.