Brand MÜLLER-SCHLENKER Caliber 11 (SC) Size 12 1/2 Function SC Version Hands 1,25x1,75 Stem 13001 (kz) Stem (subs.) 13002 (lg) Stem (2 pce) Balance staff 39502 Balance staff (subs.) Mainspring (subs.) 1,8x12,0x0,16 Mainspring (subs.) Battery