HR Mainspring No. 586 for 16L Felsa caliber 125 movements - Steel

HR No. 586 steel mainspring for 16 Ligne Felsa caliber 125, new in 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 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.