Brand HELVETIA Caliber 8420 Size 11 1/2 Function SC-CLD-AUT Version Hands 0,90x1,50 Stem 7224 Stem (subs.) Stem (2 pce) Balance staff 27607 Balance staff (subs.) Mainspring (subs.) 1,2x9,5x0,10 Mainspring (subs.) Battery