Brand AS Caliber 1530 (SC) Size 11 1/2 Function SC Version Hands 0,90x1,50 Stem 7428 Stem (subs.) Stem (2 pce) Balance staff 27505 Balance staff (subs.) 28220 INCA Mainspring (subs.) 1,30x10,0x0,11 Mainspring (subs.) Battery