




A. Schild (AS) Calibre 530.721 Watch Spare Parts: Overview and Sourcing Guide
The A. Schild (AS) Calibre 530.721 is a respected Swiss mechanical manual winding movement, valued for its precision and durability. It operates at a beat rate of 21,600 vibrations per hour (3 Hz) and is part of the reliable 530 calibre series, often used in vintage timepieces.
Key Technical Highlights
Calibre: AS 530.721
Movement Type: Mechanical, manual winding
Beat Rate: 21,600 vibrations per hour (3 Hz)
Functions: Sweep seconds
Jewels: 17 synthetic ruby jewels
Common Spare Parts and Components
Mainspring and Barrel: Authentic or New-Old-Stock (NOS) mainsprings are crucial for consistent power delivery and movement longevity.
Balance Wheel and Balance Staff: Vital for precision and shock resistance; genuine replacements ensure performance.
Pallet Fork and Escape Wheel: Wear-critical escapement parts needing quality replacements for smooth operation.
Gear Train Wheels: Minute, third, and fourth wheels sourced from NOS or donor stocks are commonly replaced.
Setting Mechanism (Stem, Crown, Levers, Springs): Exactly fitting components guarantee smooth winding and time-setting functionality.
Jewels: Synthetic ruby bearings reduce friction; replacements should match original specifications.
Split Winding Stem Male: Specialized winding stems compatible with AS calibres including 530.721 ensure reliable fit and winding.
Hands and Dial Components: Authentic parts preserve vintage aesthetics and collector value.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts designed specifically for AS 530.721 to ensure proper fit and function.
Handle delicate parts like the balance and escapement with utmost care during servicing.
Apply synthetic lubricants sparingly and follow best vintage watch maintenance practices.
Always verify the calibre number on the movement before ordering to avoid incompatibility issues.
Donor movements are excellent sources for rare or obsolete components.
Importance of Genuine Spare Parts
Genuine parts maintain the calibre’s accuracy, durability, and smooth mechanical function, essential for trusted vintage watch wear.
Proper restorations protect the historical value and increase collector appeal.
Supported by abundant technical documentation and watchmaker communities, repairs and parts sourcing are efficient and reliable.
Maintaining your A. Schild AS 530.721 calibre with original spare parts ensures its dependable performance and preserves its Swiss watchmaking heritage.
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Stem, Crown, Hands & Spares might be available for this movement.
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