Brand MAURICE LACROIX Caliber 31... Size 11 1/2 Function SC-D(3)-AUT Version Hands 0.90x1.50x0.25 Stem 5111 Stem (subs.) Stem (2 pce) Balance staff 25606 Balance staff (subs.) Mainspring (subs.) 1,05x10.5x0.115 AUT Mainspring (subs.) =3315 X Battery