PM Merelloy Mainspring M248 - Hamilton 16s movements No. 534B / 35434 / 718050 - Alloy

PM Merelloy Mainspring M248 for Hamilton 16s movements, Factory No. 534B / 35434 / 718050, alloy, new in envelope. See images for additional details. 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 an adequate job of representing the item.