Brand MAURICE LACROIX Caliber 50... Size 13 Function KLS Version Hands 0.90x1.50 Stem 8062 Gew.1.20 Stem (subs.) 8063 Gew.0.90 Stem (2 pce) Balance staff 31316 Balance staff (subs.) 31317 Mainspring (subs.) 1,75x11,50x0,013 Mainspring (subs.) Battery