1366 Watch Mainspring 3.10 x 0.205 x 540 ( 21 1/4")(Calibers in description)
Dimensions:ย 3.10 x 0.205 x 540 ( 21 1/4")
End Type: T End
Material: Swiss Made Blue Steel
Calibers:ย
Longines 21.54

Description
Dimensions:ย 3.10 x 0.205 x 540 ( 21 1/4")
End Type: T End
Material: Swiss Made Blue Steel
Calibers:ย
Longines 21.54
