A. Schild (AS) Calibre 1906 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 1906 is a vintage Swiss automatic mechanical movement renowned for its robust construction, practical complications, and reliable performance. Introduced in the mid-1960s, this calibre features a micro rotor and double excenter regulator, making it a low-profile movement appreciated by collectors and watchmakers alike. It offers useful functions like sweep seconds, day, and date with quickset functionality.
Key Technical Highlights
Calibre: AS 1906
Movement Type: Automatic, mechanical with sweep seconds
Diameter: 25.60 mm (11.5 lignes)
Height: 5.95 mm
Jewels: 17, 21, or 25 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: Approximately 44 hours
Functions: Hours, minutes, sweep seconds, day, and quickset date (setting by changing time between 20:00 and 24:00)
Shock Protection: Vintage anti-shock system
Rotor: Micro-rotor with ball-bearing mechanism for efficient winding
Lift Angle: Approximately 52°
Common Spare Parts and Components
Mainspring and Barrel: Use original or new-old-stock (NOS) mainsprings to maintain consistent torque and durability.
Balance Wheel and Balance Staff: Precise parts vital for accuracy and shock resistance; must fit exactly.
Rotor Assembly and Bearings: Key for smooth automatic winding; worn or damaged rotor parts require authentic or NOS replacements.
Pallet Fork and Escape Wheel: Wear-prone escapement components; genuine or NOS parts preserve reliable operation.
Gear Train Wheels (Minute, Third, Fourth): Often replaced due to wear; typically sourced from donor movements or NOS stock.
Setting Mechanism (Stem, Crown, Levers, Springs): Precise-fitting components are crucial for smooth winding, time, and calendar setting. Compatible winding stems include Swiss-made Part No. 401.
Jewels: Synthetic ruby bearings positioned to minimize friction; replacements must match the original layout to maintain movement integrity.
Hands and Dial Components: Period-correct parts preserve vintage authenticity and enhance collector value.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts specifically designated for AS 1906 to ensure optimal compatibility and preserve movement quality.
Handle delicate components such as balance assemblies, escapement, and rotor assembly with care during servicing.
Apply modern synthetic watch oils sparingly, following vintage lubrication standards for prolonged movement life and optimal performance.
Always verify the calibre number stamped on the main plate before ordering parts to avoid compatibility issues.
Donor AS 1906 movements are valuable sources of rare or worn spare parts.
Why AS 1906 Spare Parts Matter
Genuine parts maintain the calibre’s accuracy, efficient automatic winding, and reliable calendar functions, ensuring dependable vintage watch performance.
Using authentic components preserves the historical significance and collector value of these classic Swiss automatic wristwatches.
Well-documented technical details and an active watchmaker community facilitate expert repairs and reliable parts sourcing.
Maintaining the A. Schild AS 1906 calibre with quality, authentic spare parts is essential to keep these vintage automatics running smoothly while respecting their important place in Swiss horology heritage.
You can confirm the order by making a PayPal payment. My account email address is [email protected]
Watch Parts Enquiry
* If you are unable to fill out any of the required information fields, please type “N/A”.
Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340