HR Mainspring SA762 for Waltham 6¾ Ligne Model 675 - 677 No. 2249 / 2263 - Alloy

HR mainspring SA762 for Waltham for 6¾ Ligne Model 675 - 677, Factory Nos 2249 / 2263, alloy. 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. See image for further details. Images do a pretty good job of representing the item.