Brand MST Caliber 452 Size 11 1/2 Function SC-AUT Version Hands 0,90x1,50 Stem 6020 Stem (subs.) 6019 Stem (2 pce) Balance staff 28905 INCA Balance staff (subs.) Mainspring (subs.) 1,4x10,5x0,11 Mainspring (subs.) Battery