MST 415 Brand MST Caliber 415 Size 10 1/2 Function CLD Version Hands 0,90x1,50 Stem 6402 Stem (subs.) Stem (2 pce) Balance staff 28723 INCA Balance staff (subs.) Mainspring (subs.) 1,3x9,5x0,105 Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.180= 414Barrel with drum + cover96300180414195= 414Barell arbor146796300195414401Winding stem8026402445= 414Setting lever spring384396300445414703= 414Escape wheel -pinion 1 lower end-piec.662896300705414723Balance staff ST -shock-absorber802287232575= 430Date jumper spring-245896302575430