A Schild – AS Calibre 1906 – Part No. 420 Crown wheel (NOS) Related posts: A Schild – AS Calibre 1906 – Part No. 210 Third wheel (NOS) A Schild – AS Calibre 1906 – Part No. 227 Sweep second wheel (NOS) A Schild – AS Calibre 1906 – Part No. 422 Crown wheel ring (NOS)