Watch-Craft Mainspring 4251W – 1.80 x 0.1125 x 12¼" – Dennison 9 / 10

Watch-Craft Mainspring 4251W – 1.80 x 0.1125 x 12¼" – Dennison 9 / 10 – USA NOS. & E. Marshall Co., USA. Part No: 4251W. OriginalWatch-Craft 4251W mainspring produced byC. Dennison: 9 / 10. Material: White alloy – non-magnetic, unbreakable, rustproof.

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