CERTINA 15-20 Brand CERTINA Caliber 15-20 Size 6 3/4 Function SC-AUT (19 800) Version Hands 0,55x1,00 Stem 5105 Stem (subs.) Stem (2 pce) Balance staff 27617 Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.200BLarge driving wheell + cannon pinion912002001520210BThird wheel and pinion912002101520260BMinute wheel912002601520407BClutch wheel912004071520445Setting lever spring912004451520721Balance cplt. -regulated912007211520723Balance staff ST -shock-absorber802276171143BOscillating weight assembled9120114315201520Reversing wheel9120152015201520/1Auxilary reversing wheel912015211520