AUD.PIQUET 2121BrandAUD.PIQUETCaliber2121SizeFunctionVersionHandsStem902004012121Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)0.63x9.0x0.10x340 AUTMainspring (subs.)82019710BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401= 2120Handsetting stem (bestfit)902004012121771= 2120Mainspring AUT sliding attachemnet82019710