0778 Watch Mainspring 1.45 x 0.11 x 305 (12")(Calibers in description)

Dimensions:  1.45 x 0.11 x 305 (12")

End Type: Tongue End

Material: Swiss Made blue steel

Calibers: 

A. Michel 454, A Michel 455, A. Michel 458, A. Michel 650 P, A. Michel 651, A Michel 651 A, A Michel 651 B, A Michel 651 C, A Michel 652, A Michel 652 P, A Michel 652 PR, A Michel 657, A Michel 663, A Michel 671, A Michel 672, Arogno 62, AS 111, AS 117, Felsa 670, Felsa 673, Wilka K. 229, Wilka K. 240