0658 Watch Mainspring 1.40 x 0.06 x 195 (7 3/4") (Calibers in description)
Dimensions: Β 1.40 x 0.06 x 195 (7 3/4")
End Type: Motor Barrel
Material: Swiss Made blue steel
Calibers:Β
Hamilton mainspring number 6221, Hamilton mainspring number 718600, Hamilton 911, Hamilton 911M

Description
Dimensions: Β 1.40 x 0.06 x 195 (7 3/4")
End Type: Motor Barrel
Material: Swiss Made blue steel
Calibers:Β
Hamilton mainspring number 6221, Hamilton mainspring number 718600, Hamilton 911, Hamilton 911M
