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1081 Watch Mainspring 1.70 x 0.17 x 535 (21")(Calibers in description)

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1081 Watch Mainspring 1.70 x 0.17 x 535 (21")(Calibers in description)

Dimensions: 1.70 x 0.17 x 535 (21")

End Type: Tongue End

Material: Swiss Made Unbreakable

Calibers: 

Heuer 7700 1/5th second timer, Valjoux 7700 30 minute, Valjoux 7720 20 minute, Valjoux 7721

$36.57
1081 Watch Mainspring 1.70 x 0.17 x 535 (21")(Calibers in description)—
$36.57

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Description

Dimensions: 1.70 x 0.17 x 535 (21")

End Type: Tongue End

Material: Swiss Made Unbreakable

Calibers: 

Heuer 7700 1/5th second timer, Valjoux 7700 30 minute, Valjoux 7720 20 minute, Valjoux 7721