A Schild – AS Calibre 1903 – Part No. 422 Crown wheel ring (NOS) Related posts: A Schild – AS Calibre 1903 – Part No. 1482 Driving gear for crown wheel (NOS) A Schild – AS Calibre 1903 – Part No. 415 Ratchet wheel (NOS) A Schild – AS Calibre 1903 – Part No. 420 Crown wheel (NOS)