Brand PARRENIN Caliber 901 Size 11 1/2 Function SC Version Hands 0,90x1,40 Stem 5707 Stem (subs.) Stem (2 pce) Balance staff 29717 Balance staff (subs.) 30404 INCA / 30103 A Mainspring (subs.) 1,5x10,5x0,11 Mainspring (subs.) Battery