1179 Watch Mainspring 1.95 x 0.17 x 457 (18") (Calibers in description)

Dimensions: 1.95 x 0.17 x 457 (18")

End Type: Tongue End

Material: Swiss Made Blue Steel

Calibers: 

Alpina 355, Alpina 356, Alpina 766, Unitas 111, Unitas 112, Unitas 113, Unitas 117, Unitas 119, Unitas 121, Unitas 125, Unitas 283 lepine, Unitas 291 lepine, Unitas 297 lepine, Unitas 297 lepine, Unitas 301 lepine, Unitas 305 lepine, Unitas 309 lepine, Unitas 329 lepine, Unitas 333 lepine, Unitas 337 lepine, Unitas 499 lepine