HR Everlast Mainspring E556 for Alpina 566, 568, Tavannes 404, 406, Benrus CA - Steel

HR Everlast Mainspring E556 for Alpina 566, 568, Tavannes 404, 406, Benrus CA caliber movements, steel, new in envelope. See images for precise mainspring specifications. 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.