NuTemper Mainspring #545 for Elgin 8-Day No. 4457 - Steel

NuTemper Mainspring #545 for Elgin 37s 8-Day Car & Travel Clock movements, Factory No. 4457, steel, new in very frail 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 so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.