Brand GUB Caliber 75 Size 12 1/2 Function SC-AUT Version Spezimatic Hands Stem 6430 Stem (subs.) 6417 (Ersatz) Stem (2 pce) Balance staff 31516 Balance staff (subs.) Mainspring (subs.) 1,25x9,5x0,10 AUT Mainspring (subs.) = 82029250 Battery