Lip mainspring 112 / MHS HS Lorsa 236 237 238 / Blancpain 40 / EB 933 / Oris 470 anc 471 anc / Femga 500 502

1 mainspring / Ressort de barillet / Zugfeder / Aufzugfeder (1 piece)

Usibel 165L31

Same mainspring for all following calibers :  Lip 112 / Blancpain 40 / EB 933 / Oris 470-anc 471-anc / Femga 500 502 / MHS 236 237 238 manual wind)

New old stock / neuf de stock