Brand MIDO Caliber 917P Size 8 3/4x12 Function SC-AUT Version Hands 0,85x1,30 Stem 7242 Stem (subs.) Stem (2 pce) = 803 7308 AS1200 Balance staff 27804 INCA Balance staff (subs.) Mainspring (subs.) 1,35x8,5x0,09Sp. Mainspring (subs.) Battery