HR Nivaflex Mainspring G522 for Gruen 45, 47, Chezard 115, Otero 26, Lapanouse 125 - Alloy

HR No. G522 Nivaflex alloy mainspring for Gruen 45, 47, Chezard 115, Otero 26, Lapanouse (Cimier) 125, Oris 461 caliber movements, 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.