A Schild – AS Calibre 1704 Watch spares Parts List
| A Schild – AS Calibre 1704 – Part No. 100 plate (NOS) |
| A Schild – AS Calibre 1704 – Part No. 105 Barrel bridge (NOS) |
| A Schild – AS Calibre 1704 – Part No. 118 Combined bridge (NOS) |
| A Schild – AS Calibre 1704 – Part No. 121 Balance cock (NOS) |
| A Schild – AS Calibre 1704 – Part No. 125 Pallet cock (NOS) |
| A Schild – AS Calibre 1704 – Part No. 126 Center wheel cock (NOS) |
| A Schild – AS Calibre 1704 – Part No. 182 Barrel and cover (NOS) |
| A Schild – AS Calibre 1704 – Part No. 195 Barrel arbor (NOS) |
| A Schild – AS Calibre 1704 – Part No. 206 Center wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 210 Third wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 227 Sweep second wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 245 Cannon pinion (NOS) |
| A Schild – AS Calibre 1704 – Part No. 255 Hour wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 260 Minute wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 301 Regulator for flat hairspring (NOS) |
| A Schild – AS Calibre 1704 – Part No. 311 Upper cap jewel with end-piece, for balance (NOS) |
| A Schild – AS Calibre 1704 – Part No. 330 Lower cap jewel with end-piece,for balance (NOS) |
| A Schild – AS Calibre 1704 – Part No. 401 Winding stem (NOS) |
| A Schild – AS Calibre 1704 – Part No. 407 Clutch wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 410 Winding pinion (NOS) |
| A Schild – AS Calibre 1704 – Part No. 415 Ratchet wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 420 Crown wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 422 Crown wheel ring (NOS) |
| A Schild – AS Calibre 1704 – Part No. 425 Click (NOS) |
| A Schild – AS Calibre 1704 – Part No. 430 Click spring (NOS) |
| A Schild – AS Calibre 1704 – Part No. 435 Yoke (NOS) |
| A Schild – AS Calibre 1704 – Part No. 440 Yoke spring (NOS) |
| A Schild – AS Calibre 1704 – Part No. 443 Setting lever (NOS) |
| A Schild – AS Calibre 1704 – Part No. 445 Setting Iever spring (NOS) |
| A Schild – AS Calibre 1704 – Part No. 450 Setting wheel (NOS) |
| A Schild – AS Calibre 1704 – Part No. 468 Minute wheel cock (NOS) |
| A Schild – AS Calibre 1704 – Part No. 705 Escape wheel and pinion (NOS) |
| A Schild – AS Calibre 1704 – Part No. 710 Jewelled pallet fork (NOS) |
| A Schild – AS Calibre 1704 – Part No. 714 Pallet staff (NOS) |
| A Schild – AS Calibre 1704 – Part No. 721 Complete Balance (NOS) |
| A Schild – AS Calibre 1704 – Part No. 730 Roller (NOS) |
| A Schild – AS Calibre 1704 – Part No. 770 Mainspring (NOS) |
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A. Schild (AS) Calibre 1704 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1704 is a vintage Swiss manual-wind mechanical movement, highly regarded for its reliability, compact flat profile, and sweep seconds feature. Produced around the 1960s, this calibre measures approximately 25.60 mm (11.5 lignes) in diameter with a height of about 3.60 mm. It features 17 synthetic ruby jewels and runs at a frequency of 18,000 vibrations per hour (vph), offering a power reserve of around 42 hours.
Key Technical Highlights
Calibre: AS 1704
Movement Type: Manual winding, mechanical
Diameter: 25.60 mm (11.5 lignes)
Height: 3.60 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 42 hours
Functions: Hours, minutes, sweep seconds
Shock Protection: Standard vintage anti-shock system like Incabloc
Lift Angle: 52 degrees
Common Spare Parts and Components
Mainspring and Barrel: Must match original specification for steady torque and power delivery.
Balance Wheel and Balance Staff: Delicate components essential for timekeeping accuracy and shock resistance; require precise fitting.
Pallet Fork and Escape Wheel: Wear-prone escapement parts; originals or high-quality new-old-stock (NOS) replacements recommended.
Gear Train Wheels (Center, Third, Fourth, Sweep Second): Commonly replaced due to wear or damage; often sourced from NOS stock or donor movements.
Setting Mechanism (Stem, Crown, Levers, Springs): Must fit perfectly for smooth winding and time setting.
Jewels: Synthetic ruby bearings arranged to minimize friction; replacement jewels must match the original layout.
Hands and Dial Components: Period-correct parts help maintain vintage authenticity and collector appeal.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts specifically marked for AS 1704 to maintain compatibility and movement integrity.
Handle fragile components such as the balance wheel and escapement with care during servicing.
Apply modern synthetic watch oils sparingly, following vintage lubrication standards to maximize longevity.
Verify the calibre number stamped on the main plate before ordering parts to prevent mismatches.
Why AS 1704 Spare Parts Matter
Authentic parts preserve the calibre’s accuracy, reliability, and classic vintage character, ensuring proper mechanical function.
Proper servicing and restoration with genuine components extend the movement’s longevity and maintain collector value.
The well-documented technical details and active watchmaker community facilitate accurate parts sourcing and expert servicing.
Maintaining the A. Schild AS 1704 calibre with quality spare parts is essential to keep these refined vintage manual-wind watches running reliably and preserving their horological heritage.