BESTFIT Mainspring JA205 for 16s Hamilton No. 318 / 718043 - Alloy

BESTFIT Mainspring MS-JA205 for Hamilton 16s Movements, Factory No. 318 / 718043, T-end, alloy, new in envelope. See image 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 so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.