Marco Mainspring #3064 for Buren 535, General 110, Eta 1070, 1170 - Steel

Marco steel mainspring #3064 for Buren 535, General 110, Eta 1070, 1170 & Cortebert 447 caliber movements, and perhaps others. 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.