Brand PARRENIN Caliber 81 (10 1.2) Size 10 1/2 Function Version Hands 0,90x1,40 Stem 7416 Stem (subs.) Stem (2 pce) Balance staff 35003 Balance staff (subs.) Mainspring (subs.) 1,45x7,5x0,09 Mainspring (subs.) Battery