0639 Watch Mainspring 1.35 x 0.135 x 254 (10")(Calibers in description)
Dimensions: Β 1.35 x 0.135 x 254 (10")
End Type: T End
Material: Swiss Made blue steel
Calibers:Β
Hamilton mainspring number 1721, Hamilton mainspring number 1921, Hamilton mainsrping number 718200, Hamilton 986, Hamilton 988

Description
Dimensions: Β 1.35 x 0.135 x 254 (10")
End Type: T End
Material: Swiss Made blue steel
Calibers:Β
Hamilton mainspring number 1721, Hamilton mainspring number 1921, Hamilton mainsrping number 718200, Hamilton 986, Hamilton 988
