Marco Mainspring #2825 for A. Michel 57, 58, Felsa 105, 107, 156, 158 - Steel

Marco steel mainspring #2825 for A. Michel 57, 58, Felsa 105, 107, 156, 158, & Gruen 200, 201, 620, 621, 626, 627, 629, 685, 686 caliber movements and perhaps many others, new in 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.