Marco Mainspring #412 for Hamilton 16s Model 992, 996, 950, 952 No. 534 - Steel

Marco Mainspring No. 412 for Hamilton 16s Model 992, 996, 950, 952 movements, Factory No. 534, steel, new in envelope. See images for further details. These are frequently just repackaged Hamilton factory mainsprings. 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 a pretty good job of representing the item.