A. Schild (AS) Calibre 5204 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 5204 is a well-regarded Swiss manual wind movement known for its precision, reliability, and compact design. This calibre measures 27.6 mm in diameter and has a height of 4.65 mm, making it a thin movement suitable for elegant vintage watches. It features 17 jewels, a beat rate of 21,600 vibrations per hour (3 Hz), and a power reserve of approximately 47 hours.
Key Technical Highlights
Calibre: AS 5204
Movement Type: Manual winding, mechanical
Diameter: 27.6 mm (12 lignes)
Height: 4.65 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 21,600 vibrations per hour (3 Hz)
Power Reserve: Approximately 47 hours
Lift Angle: 50°
Functions: Hours, minutes, sweep seconds
Common Spare Parts and Components
Mainspring and Barrel: Original or New-Old-Stock (NOS) mainsprings are crucial for maintaining power consistency and movement durability.
Balance Wheel and Balance Staff: Key components responsible for maintaining accurate timing and shock absorption.
Pallet Fork and Escape Wheel: Essential escapement parts; genuine or NOS replacements ensure smooth operation.
Gear Train Wheels: Includes minute, third, and fourth wheels; typically sourced from NOS or donor movements when replacements are necessary.
Setting Mechanism (Stem, Crown, Levers, Springs): Precise fitting parts are essential for smooth winding and time-setting functions.
Jewels: Synthetic ruby bearings reduce friction and wear; correct placement is critical for performance.
Hands and Dial Components: Authentic parts help preserve watch value and maintain original aesthetics.
Sourcing and Maintenance Tips
Always source original, NOS, or donor parts designed for AS 5204 to ensure perfect fit and function.
Handle delicate parts such as the balance and escapement cautiously during servicing.
Use modern synthetic lubricants sparingly and adhere to vintage watch maintenance standards.
Verify the calibre number on the movement before purchasing parts to avoid compatibility issues.
Donor movements are valuable resources for hard-to-find components.
Why AS 5204 Spare Parts Matter
Genuine parts maintain the accuracy, durability, and smooth operation of this reliable manual wind calibre.
Authentic restorations help preserve the historical importance and collector appeal of these Swiss mechanical watches.
Rich documentation and active watchmaker communities facilitate effective repairs and sourcing.
Maintaining your A. Schild AS 5204 calibre with genuine spare parts guarantees lasting reliability and honors its horological heritage.
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Stem, Crown, Hands & Spares might be available for this movement.
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