Rezista Mainspring #167 for Benrus AB, Font 120, 123 - Steel

Rezista Mainspring No. 167 for Benrus AB, Font 120, 123 caliber movements as well as perhaps several others, steel, new 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.