0641 Watch Mainspring 1.35 x 0.135 x 292 (11 1/2")(Calibers in description)
0641 Watch Mainspring 1.35 x 0.135 x 292 (11 1/2")(Calibers in description) is backordered and will ship as soon as it is back in stock.
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Description
Description
Dimensions: 1.35 x 0.135 x 292 (11 1/2")
End Type: T End
Material: Swiss Made blue steel
Calibers:
Hamilton mainspring number 2321, Hamilton mainspring number 2521, Hamilton mainspring number 718201, Hamilton 986A, Hamilton 987, Hamilton 987A, Hamilton 987E, Hamilton 987F, Hamilton 987S
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