HR Mainspring No. 344 for Omega 300, ETA 1000, 1220 - Steel

HR Mainspring No. 344 for Omega caliber 300, ETA caliber 1000, 1220 & AS caliber 525, 723 plus perhaps many more similar ébauche watches, steel, new in envelope. 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 is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.