Tru-Time Mainspring For Elgin 0s, 3/0s Factory No. 2097 - Steel

Tru-Time Mainspring for Elgin 0s, 3/0s Factory No. 2097, steel, new in envelope. See images for precise mainspring specifications and further details. 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.