HR Mainspring A752 for Waltham 4½ ligne movements Factory No. 2241 - Steel

HR mainspring A752 for Waltham for 4½ ligne movements, Factory No. 2241, steel, new in envelope. See images for precise mainspring specifications. I specialize is 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.