Imported SWISS Mainspring No. 2224A for 12s Waltham Pocket Watch - Steel

Imported SWISS Mainspring for 12s Waltham Pocket Watches, Factory No. 2224A, steel, new in envelope. See images for precise mainspring specifications. Yes, I realize the envelope says 2224 but they are 2224A's. I likely have several of these so the one you get may differ slightly from the images. I'm sure the ship and Swiss flag represent a maker name, but I don't know what it is. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a marginally adequate job of representing the item.