Marco Mainspring #278 for Waltham 6¾ Ligne Model 670 Factory No. 2244 - Steel

Marco Mainspring #278 for Waltham Factory No. 2244 for 6¾ Ligne Model 670, steel, new in envelope. See image for further details. I likely have several of these so the one you get may differ very 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. See image for further details. Images do a pretty good job of representing the item.