Marco Mainspring #3296 for 12s Omega Caliber 39.1 Pocket Watch - Steel

Marco Mainspring No. 3296 for Omega caliber 39.1, 17 ligne, 12s Pocket Watch, steel, new in envelope. See image 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 and all watch parts are unconditionally guaranteed. Images do a suitable job of representing the item.