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

Marco steel mainspring No. 3064 for Buren 535, General 110, ETA 1070, 1170 & Cortebert 447 caliber movements, and perhaps others. 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.