SUPREME Mainspring for Waltham 16s No. 2208 - Steel

SUPREME Mainspring for Waltham 16s, Factory No. 2208, steel, new in frail envelope. See images for further details. I may more than one of these so the 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.