A Schild – AS Calibre 1798 Watch spare parts
| A Schild – AS Calibre 1798 – Part No. 100 plate |
| A Schild – AS Calibre 1798 – Part No. 105 Barrel bridge |
| A Schild – AS Calibre 1798 – Part No. 118 Combined bridge |
| A Schild – AS Calibre 1798 – Part No. 121 Balance cock |
| A Schild – AS Calibre 1798 – Part No. 125 Pallet cock |
| A Schild – AS Calibre 1798 – Part No. 163/1 Center pipe |
| A Schild – AS Calibre 1798 – Part No. 182 Barrel and cover |
| A Schild – AS Calibre 1798 – Part No. 195 Barrel arbor |
| A Schild – AS Calibre 1798 – Part No. 200/1 Large driving wheel |
| A Schild – AS Calibre 1798 – Part No. 210 Third wheel |
| A Schild – AS Calibre 1798 – Part No. 227 Sweep second wheel |
| A Schild – AS Calibre 1798 – Part No. 240 Cannon pinion with clam notch |
| A Schild – AS Calibre 1798 – Part No. 243 Cannon pinion without clam notch |
| A Schild – AS Calibre 1798 – Part No. 255 Hour wheel |
| A Schild – AS Calibre 1798 – Part No. 260 Minute wheel |
| A Schild – AS Calibre 1798 – Part No. 301 Regulator for flat hairspring |
| A Schild – AS Calibre 1798 – Part No. 311 Upper cap jewel with end-piece, for balance |
| A Schild – AS Calibre 1798 – Part No. 330 Lower cap jewel with end-piece,for balance |
| A Schild – AS Calibre 1798 – Part No. 401 Winding stem |
| A Schild – AS Calibre 1798 – Part No. 407 Clutch wheel |
| A Schild – AS Calibre 1798 – Part No. 410 Winding pinion |
| A Schild – AS Calibre 1798 – Part No. 415 Ratchet wheel |
| A Schild – AS Calibre 1798 – Part No. 420 Crown wheel |
| A Schild – AS Calibre 1798 – Part No. 422 Crown wheel ring |
| A Schild – AS Calibre 1798 – Part No. 425 Click |
| A Schild – AS Calibre 1798 – Part No. 430 Click spring |
| A Schild – AS Calibre 1798 – Part No. 435 Yoke |
| A Schild – AS Calibre 1798 – Part No. 440 Yoke spring |
| A Schild – AS Calibre 1798 – Part No. 443 Setting lever |
| A Schild – AS Calibre 1798 – Part No. 445 Setting Iever spring |
| A Schild – AS Calibre 1798 – Part No. 450 Setting wheel |
| A Schild – AS Calibre 1798 – Part No. 468 Cannon pinion guard |
| A Schild – AS Calibre 1798 – Part No. 482 Setting lever return-spring |
| A Schild – AS Calibre 1798 – Part No. 703 Escape wheel and pinion |
| A Schild – AS Calibre 1798 – Part No. 710 Jewelled pallet fork |
| A Schild – AS Calibre 1798 – Part No. 714 Pallet staff |
| A Schild – AS Calibre 1798 – Part No. 721 Complete Balance |
| A Schild – AS Calibre 1798 – Part No. 730 Roller |
| A Schild – AS Calibre 1798 – Part No. 770 Mainspring |
| A Schild – AS Calibre 1798 – Part No. 775 Brake spring |
| A Schild – AS Calibre 1798 – Part No. 1141/1 Lower bridge for automatic device |
| A Schild – AS Calibre 1798 – Part No. 1142 Upper bridge for automatic device |
| A Schild – AS Calibre 1798 – Part No. 1143/1 Oscillating weight, mounted |
| A Schild – AS Calibre 1798 – Part No. 1428 Stop click |
| A Schild – AS Calibre 1798 – Part No. 1480 Winding-up wheel |
| A Schild – AS Calibre 1798 – Part No. 1482 Driving gear for crown wheel |
| A Schild – AS Calibre 1798 – Part No. 1488 Pawl winding wheel, complete |
| A Schild – AS Calibre 1798 – Part No. 1491Oscillating weight bolt |
| A Schild – AS Calibre 1798 – Part No. 1496 Oscillating weight axle |
| A Schild – AS Calibre 1798 – Part No. 1555 Bolt for winding-up wheel |
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A. Schild (AS) Calibre 1788 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1788 is a vintage Swiss automatic mechanical movement appreciated for its reliable automatic winding system, compact size, and classic functions. It is commonly found in mid-20th century wristwatches and known for its robustness and mechanical accuracy.
Key Technical Highlights
Calibre: AS 1788
Movement Type: Automatic, mechanical
Diameter: Approximately 8.75 lignes (~19.4 mm)
Height: Around 4.9 mm (typical for similar calibres)
Jewels: 17 or 21 synthetic ruby jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: Approximately 38 hours
Functions: Hours, minutes, sweep seconds, automatic winding
Shock Protection: Vintage anti-shock systems like Incabloc
Notable: Features efficient automatic winding with a ball-bearing rotor system
Common Spare Parts and Components
Mainspring and Barrel: Essential for consistent and reliable power delivery; NOS or original mainsprings ensure proper torque and durability.
Balance Wheel and Balance Staff: Precision parts vital for accurate timekeeping and shock resistance; must fit perfectly with appropriate shock protection.
Rotor Assembly and Bearings: Core to automatic winding efficiency; worn rotors and bearings need quality replacement parts or NOS components for smooth operation.
Pallet Fork and Escape Wheel: Critical escapement components susceptible to wear; sourcing genuine or high-quality NOS parts preserves smooth motion transfer.
Gear Train Wheels (Minute, Third, Fourth): Replaceable parts commonly sourced from donor movements or NOS stock due to wear or damage.
Setting Mechanism (Stem, Crown, Levers, Springs): Must fit precisely for reliable winding, time setting, and hand adjustments. Swiss-made winding stems are generally available.
Jewels: Synthetic ruby bearings arranged to minimize friction; replacements must correspond exactly to original layout.
Hands and Dial Components: Period-appropriate parts maintain vintage authenticity and add collector appeal.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts specifically marked for AS 1788 to ensure compatibility and maintain the movement’s integrity.
Handle delicate components such as the balance wheel, escapement, and rotor assembly carefully during servicing to avoid damage.
Apply modern synthetic watch oils sparingly, adhering to vintage lubrication standards to optimize longevity and functionality.
Always confirm the calibre number stamped on the main plate before ordering parts to prevent mismatches.
Donor AS 1788 movements serve as valuable sources for hard-to-find or worn components.
Why AS 1788 Spare Parts Matter
Authentic parts preserve the calibre’s accuracy, automatic winding efficiency, and mechanical durability, crucial for reliable everyday use.
Proper servicing with genuine components helps maintain the historical significance and collectible value of these classic Swiss automatic watches.
The detailed technical design and active watchmaker community facilitate trusted parts sourcing and expert repairs.
Maintaining the A. Schild AS 1788 calibre with quality spare parts is essential for ensuring these vintage automatic movements continue to perform smoothly, preserving their important place in horological history.