HR Mainspring SA764 for Waltham 8¾ Ligne Model 870 #2253 - Alloy

HR mainspring SA764 for Waltham for 8¾ Ligne Model 870, Factory No. 2253, alloy. See image 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. See image for further details. Images do a pretty good job of representing the item.