HR Mainspring SA208 for 16s Hamilton Factory No. 534 / 718047 - Alloy

HR Mainspring SA208 for Hamilton 16s Movements, Factory No. 534 / 718047, alloy, new in envelope. See image 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.