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A. Schild (AS) Calibre 1456 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1456 is a vintage Swiss manual-wind mechanical movement, valued for its compact size, reliability, and sweeping seconds function. This calibre is typical of mid-20th-century watch engineering and remains popular among collectors and watchmakers restoring classic wristwatches.
Key Technical Highlights
Calibre: AS 1456
Movement Type: Manual wind, mechanical
Diameter: Approximately 19.4 mm (8.75 lignes)
Height: Around 3.4 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 36 hours
Functions: Hours, minutes, sweep central seconds
Common Spare Parts and Service Needs
Mainspring and Barrel: Essential for consistent power delivery; replacement needed when fatigued or broken, must match original specifications.
Balance Wheel and Balance Staff: Crucial for timekeeping accuracy; shock or wear damage requires precise replacements compatible with AS 1456 dimensions and shock settings.
Pallet Fork and Escape Wheel: Wear-prone escapement components; authentic or new-old-stock (NOS) parts preferred for smooth operation.
Wheels (Minute, Third, Fourth): Gear train wheels subject to wear; typically sourced from donor movements or NOS supply.
Setting Mechanism (Stem, Crown, Levers, Springs): Vital for manual winding and time setting; exact fit required for reliable function.
Jewels: Synthetic ruby bearings, matching original count and placement to reduce friction and wear.
Hands and Dial Components: Period-correct parts maintain visual authenticity and collector value.
Sourcing and Maintenance Tips
Prioritize original or NOS parts marked for AS 1456 to ensure precise fit and movement integrity.
Donor AS 1456 movements are invaluable for harvesting rare or worn components.
Handle delicate parts like the balance wheel and escapement with care during servicing.
Use modern synthetic oils sparingly, aligning with vintage lubrication standards to maximize longevity.
Confirm the calibre number stamped on the main plate before ordering parts to avoid incompatibility.
Why AS 1456 Spare Parts Matter
Maintaining authentic or compatible parts preserves the movement’s historical reliability and accuracy.
Proper restoration sustains the collector appeal and vintage character of watches housing this calibre.
AS 1456 is documented within the vintage watch servicing community, facilitating sourcing and technical support.
Sourcing quality spare parts is essential for keeping the A. Schild AS 1456 manual-wind movement running reliably and authentically, preserving its legacy as a classic Swiss mechanical calibre.