1277A Watch Mainspring 2.65 x 0.20 x 545 (21 1/2")(Calibers in description)
Dimensions: 2.65 x 0.20 x 545 (21 1/2")
End Type: Double Brace
Material: Swiss Made Unbreakable
Calibers:
Elgin 16 size all 16 size models with going barrels, number 817

Description
Dimensions: 2.65 x 0.20 x 545 (21 1/2")
End Type: Double Brace
Material: Swiss Made Unbreakable
Calibers:
Elgin 16 size all 16 size models with going barrels, number 817
