Marco Mainspring #130 for 12s Elgin 7j to 17j movements No. 1712 - Steel

Marco mainspring #130 for Elgin 12s 7j to 17j, 2nd and 3rd model movements, Factory No. 1712, steel, new in possible frail envelope. See images for further details. I likely have several of these so the one you get may differ slightly from the images. I specialize in 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.