Brand B.F.G. Calibre 58 Size 12 1/2 Function SC Version Hands 1,10x1,60 Stem 8303 Stem (subs.) Stem (2 pce) Balance staff 29812 Balance staff (subs.) 29813 Mainspring (subs.) 1,25x10,5x0,125 Mainspring (subs.) Battery