HR Everlast Mainspring E491 for Kurth 248, Tavannes 384, 386, Recta M - Steel

HR Everlast Mainspring E491 for Kurth 248, Tavannes 384, 386, Recta M 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.