MST 472 Brand MST Caliber 472 Size 7 3/4 Function SC-AUT Version Hands 0,70x1,20 Stem 5011 Stem (subs.) Stem (2 pce) Balance staff 26717 INCA Balance staff (subs.) Mainspring (subs.) 1,3x7,0x0,08Sp. Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.227= 2540Sweep second pinion920002272540401Winding stem8025011415= 2550Ratchet wheel96300415472723Balance staff ST -shock-absorber80226717