PM Merelloy Mainspring M272 for 16s Illinois 47315 - Alloy

PM Merelloy Mainspring M272 for 16s Illinois, Factory No. 47315, alloy, new in envelope. See images for further details. 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 pretty good job of representing the item.