Brand HELVETICA Caliber 133 Size 6 3/4 Function o. SC Version Hands 0,60x1,20 Stem 5519 Stem (subs.) Stem (2 pce) Balance staff 26004 / 26010 (o.Schr) Balance staff (subs.) 27003 INCA / 27011 INCA Mainspring (subs.) 1,4x6,5x0,07 Mainspring (subs.) = 03589 Battery