A Schild – AS Calibre 1977 Watch spare parts
| A Schild – AS Calibre 1977 – Part No. 100 plate |
| A Schild – AS Calibre 1977 – Part No. 105 Barrel bridge |
| A Schild – AS Calibre 1977 – Part No.110 Train-wheel bridge |
| A Schild – AS Calibre 1977 – Part No. 121/3 Balance cock |
| A Schild – AS Calibre 1977 – Part No. 125 Pallet cock |
| A Schild – AS Calibre 1977 – Part No. 182 Barrel and cover |
| A Schild – AS Calibre 1977 – Part No. 195 Barrel arbor |
| A Schild – AS Calibre 1977 – Part No. 201 Center wheel |
| A Schild – AS Calibre 1977 – Part No. 210 Third wheel |
| A Schild – AS Calibre 1977 – Part No. 220 Fourth wheel |
| A Schild – AS Calibre 1977 – Part No. 240 Cannon pinion |
| A Schild – AS Calibre 1977 – Part No. 250 Hour wheel |
| A Schild – AS Calibre 1977 – Part No. 260 Minute wheel |
| A Schild – AS Calibre 1977 – Part No. 307/1 Regulator for flat hairspring |
| A Schild – AS Calibre 1977 – Part No. 375 Adjustable Stud Holder for flat hairspring |
| A Schild – AS Calibre 1977 – Part No. 401 Winding stem |
| A Schild – AS Calibre 1977 – Part No. 407 Clutch wheel |
| A Schild – AS Calibre 1977 – Part No. 410 Winding pinion |
| A Schild – AS Calibre 1977 – Part No. 415 Ratchet wheel |
| A Schild – AS Calibre 1977 – Part No. 420 Crown wheel |
| A Schild – AS Calibre 1977 – Part No. 422 Crown wheel ring |
| A Schild – AS Calibre 1977 – Part No. 425 Click |
| A Schild – AS Calibre 1977 – Part No. 430 Click spring |
| A Schild – AS Calibre 1977 – Part No. 435 Yoke |
| A Schild – AS Calibre 1977 – Part No. 440 Yoke spring |
| A Schild – AS Calibre 1977 – Part No. 443 Setting lever |
| A Schild – AS Calibre 1977 – Part No. 445 Setting Iever spring |
| A Schild – AS Calibre 1977 – Part No. 450 Setting wheel |
| A Schild – AS Calibre 1977 – Part No. 705 Escape wheel and pinion |
| A Schild – AS Calibre 1977 – Part No. 710 Jewelled pallet fork |
| A Schild – AS Calibre 1977 – Part No. 721 Complete Balance |
| A Schild – AS Calibre 1977 – Part No. 770 Mainspring |
A. Schild (AS) Calibre 1977 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1977 is a vintage Swiss manual-wind mechanical movement, known for its reliability and compact design. Produced primarily in the mid-20th century, this calibre is favored by collectors and watchmakers restoring classic vintage wristwatches, especially ladies’ watches due to its relatively small size.
Key Technical Highlights
Calibre: AS 1977
Movement Type: Manual winding, mechanical
Dimensions: Approximately 13.00 x 15.20 mm (shaped movement)
Height: 3.50 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: About 44 hours
Functions: Hours, minutes, and sweep seconds
Shock Protection: Typically equipped with Incabloc
Escapement: Lever escapement
Regulation: Classic A. Schild design with indexed regulator
Setting Mechanism: Yoke winding system, smooth winding and setting
Common Spare Parts and Components
Mainspring and Barrel: Original or new-old-stock (NOS) mainsprings are vital for steady power delivery and torque stability.
Balance Wheel and Balance Staff: Precision parts essential for accurate timekeeping and shock resistance, requiring exact fitment.
Pallet Fork and Escape Wheel: Wear-prone escapement components; sourcing genuine or NOS replacements is recommended for smooth operation.
Gear Train Wheels: Including minute, third, and fourth wheels, commonly replaced due to wear and usually sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Accurate-fitting components necessary for smooth manual winding and time setting.
Jewels: Synthetic ruby bearings designed to minimize friction; exact matching replacements preserve movement integrity.
Hands and Dial Components: Period-correct parts maintain vintage authenticity and collector value.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts specifically designated for AS 1977 to ensure compatibility and maintain quality.
Handle delicate components such as the balance assembly, escapement, and setting mechanisms carefully during servicing to avoid damage.
Apply modern synthetic watch lubricants sparingly, following vintage lubrication protocols for optimal longevity and performance.
Verify the calibre number stamped on the movement main plate before ordering to prevent incompatible parts.
Donor AS 1977 movements can be excellent sources for rare or worn components.
Why AS 1977 Spare Parts Matter
Genuine parts preserve the calibre’s accuracy, mechanical reliability, and smooth manual winding operation, critical for dependable vintage watch performance.
Proper restoration with authentic parts protects the historical significance and collector value of this classic Swiss manual-wind movement.
Availability of detailed technical data and an active watchmaker community simplifies parts sourcing and expert repairs.
Maintaining the A. Schild AS 1977 calibre with high-quality, original spare parts keeps these vintage timepieces running reliably while respecting their place in Swiss horological heritage.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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