Sandsteel Mainspring for Waltham 8¾ Ligne Model 870 No. 2242 - Steel

Sandsteel Mainspring for Waltham 8¾ Ligne Model 870, Factory No. 2242, steel, new in envelope. See images for precise mainspring specializations. 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.