A. Schild (AS) Calibre 1985 Watch Spare Parts: Technical Overview and Sourcing Guide

A. Schild (AS) Calibre 1985 is a high-grade Swiss automatic mechanical movement recognized for its robust performance, reliability, and practical quickset date function. Widely used in mid- to late-20th-century wristwatches, the AS 1985 is appreciated by collectors and watchmakers for its practical engineering and lasting durability.
Key Technical Highlights

Calibre: AS 1985

Movement Type: Automatic, mechanical

Diameter: 25.60 mm (11.5 lignes)

Height: 5.20 mm

Jewels: 17, 21, or 25 synthetic ruby jewels

Beat Rate: 21,600 vibrations per hour (3 Hz)

Power Reserve: Around 46 hours

Functions: Hours, minutes, sweep seconds, quickset date (via repeated crown push)

Shock Protection: Typically Incabloc or equivalent

Common Spare Parts and Components

Mainspring and Barrel: NOS or original mainsprings and barrels are critical for steady torque delivery and consistent timekeeping.

Balance Wheel and Balance Staff: Must be an exact fit to ensure optimal accuracy and shock resistance; genuine or NOS parts recommended.

Automatic Rotor and Bearings: Fundamental for efficient self-winding; worn rotors or bearings should be swapped with original or NOS units.

Pallet Fork and Escape Wheel: Escapement parts prone to wear; genuine/NOS replacements keep the escapement smooth and reliable.

Gear Train Wheels: Minute, third, and fourth wheels are commonly replaced due to wear, best sourced from donor movements or NOS stocks.

Setting Mechanism (Stem, Crown, Levers, Springs): Precise-fitting is crucial for winding, setting, and quickset date—winding stem part No. 401 is often compatible.

Jewels: Synthetic ruby bearings correctly positioned for friction reduction and longevity; only authentic replacements maintain movement integrity.

Hands and Dial Components: Period-appropriate hands and dials secure vintage appeal and collector value.

Date Mechanism: Includes date disc, spring, jumper, and unlocking yoke; these are must-haves for reliable quickset date function.

Sourcing and Maintenance Tips

Always secure original, NOS, or donor parts specifically made for AS 1985 to guarantee fit, reliability, and accuracy.

Handle balance assemblies, escapement, and calendar modules with care during service due to their precision.

Minimal, careful lubrication using modern synthetic watch oils—following vintage service guides—prevents premature wear.

Confirm the calibre number on the main plate before ordering to avoid mismatches.

Donor AS 1985 movements provide valuable sources for rare or high-wear items.

Why AS 1985 Spare Parts Matter

Using original components preserves the movement’s accuracy, robust self-winding, and reliable quickset date, vital for lasting vintage performance.

Authentic parts maintain the historical and collector value of these treasured Swiss automatics.

Detailed service documentation and an active restoration community ensure confident repairs and precise sourcing.

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Stem, Crown, Hands & Spares might be available for this movement.

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