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1366 Watch Mainspring 3.10 x 0.205 x 540 ( 21 1/4")(Calibers in description)

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1366 Watch Mainspring 3.10 x 0.205 x 540 ( 21 1/4")(Calibers in description)

Dimensions: 3.10 x 0.205 x 540 ( 21 1/4")

End Type: T End

Material: Swiss Made Blue Steel

Calibers:

Longines 21.54

$22.86

1366 Watch Mainspring 3.10 x 0.205 x 540 ( 21 1/4")(Calibers in description)—

$22.86

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Description

Dimensions: 3.10 x 0.205 x 540 ( 21 1/4")

End Type: T End

Material: Swiss Made Blue Steel

Calibers:

Longines 21.54