Watch-Craft Mainspring 2814W – 1.70 x 0.10 x 10½" – Dennison 8 / 11
Watch-Craft Mainspring 2814W – 1.70 x 0.10 x 10½" – Dennison 8 / 11 – USA NOS. & E. Marshall Co., USA. Constructed from high-quality white alloy for durability, rustproofing, and non-magnetic stability.