Hamilton Dynavar 16s Mainspring #35434 - Alloy

Hamilton Dynavar Factory Mainspring for 16s Movements, specifically the 950B and the 992B, Factory No. 35434, alloy, in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.