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A. Schild (AS) Calibre 1507 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1507 is a vintage Swiss manual-wind mechanical movement recognized for its robust construction, reliable sweeping seconds function, and compact design. Produced around the mid-1950s, this calibre remains popular with collectors and watchmakers focused on restoring classic mid-20th-century wristwatches.
Key Technical Highlights
Calibre: AS 1507
Movement Type: Manual wind, mechanical
Diameter: 25.60 mm (11.5 lignes)
Height: Approximately 4.07 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 45 hours
Functions: Hours, minutes, sweeping central seconds
Common Spare Parts and Service Needs
Mainspring and Barrel: Essential for reliable power transmission; replacements must match original dimensions and specifications to maintain consistent energy delivery.
Balance Wheel and Balance Staff: Crucial for timing precision; these delicate components require careful handling and exact dimension matching for shock protection compatibility.
Pallet Fork and Escape Wheel: Wear-prone escapement parts which require original or new-old-stock (NOS) replacements to ensure smooth operation.
Gear Train Wheels (Minute, Third, Fourth): These wheels commonly suffer from pivot wear or tooth damage; sourcing from donor movements or NOS parts is typical.
Setting Mechanism (Stem, Crown, Levers, Springs): Critical for winding and time setting; accurate fitting parts are necessary for proper function.
Jewels: Synthetic ruby bearings must match original placement and count to minimize friction and preserve movement longevity.
Hands and Dial Components: Period-correct or original parts maintain authenticity and collector value.
Sourcing and Maintenance Tips
Prioritize original, NOS, or donor parts designated for AS 1507 to ensure compatibility and preserve movement integrity.
Exercise care during servicing due to the movement’s relatively compact size and delicate balance components.
Use modern synthetic oils sparingly, adhering to vintage watch lubrication standards for optimal performance and longevity.
Always verify the calibre number stamped on the main plate before ordering spare parts to avoid mismatches.
Why AS 1507 Spare Parts Matter
Using authentic or compatible parts preserves the movement’s accuracy, reliability, and historical value.
Proper restoration maintains the watch’s collector appeal and the vintage character of this classic Swiss calibre.
AS 1507 is documented in watchmaker resources, facilitating parts sourcing and technical support for repairs.
Keeping the A. Schild AS 1507 calibre serviced with quality spare parts is essential to sustain these elegant vintage watches’ reliable operation and collector status.