AS 1903 – interchangeable spare parts
A. Schild (AS) 1903 movement
Which spare parts fit the AS 1903 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
🛒 Spare parts for AS 1903 in our shop
🔧 Interchangeable parts
Source: original interchangeability lists of A. Schild (AS) (checked transcription) and checked original spare-part labels · as of 2026-10-28. Height / execution: the part fits only in this height or execution.
🌀 Matching mainspring
Mainspring dimensions for AS 1903 (height × diameter × thickness × length) and matching mainspring in our shop:
📄 Technical document
View the original document for AS 1903 online:
🔗 Movements sharing the most parts
❓ Frequently asked questions
Which AS 1903 spare parts also fit other movements?
For the AS 1903, 53 part numbers are listed as interchangeable. Together they fit 109 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the AS 1903?
The most shared parts: AS 1913 (58 parts), AS 1713 (57 parts), AS 1902 (52 parts).
Which mainspring fits the AS 1903?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.45 × 10.5 × 0.115 × 360 mm (GR 3998-1X, automatic, with welded slipping bridle, special version (1X)).
Can I buy spare parts for the AS 1903?
Yes, Master Watch Parts currently has 2 matching items in stock.
🛠️ For the workshop
Star Keys, Clock Keys, Winding Keys – Set of 2 (3-5-7-9-11 and 2-4-6-8-10)13,95 € incl. VAT *View item ›
Watch Gasket Hytrel I-Ring Seal for Flat Round Mineral Crystals 16-40 mm, H: 0.6, 0.8, 0.85, 1.25, 1.7 mm5,95 € – 9,95 € incl. VAT *View item ›
Red Teflon Hard Gasket For Watch Caseback Multi Size Listing Ø 16-42. Suitable for many brand watches such as Omega, Tissot, Junghans5,95 € – 7,95 € incl. VAT *View item ›
