Flex-Alloy Mainspring for 16s Hamilton 992B - 950B No. 534B / 718050 - Alloy

Flex-Alloy Mainspring for 16s Hamilton Motor Barrel Movements, Factory No. 534B / 718050, alloy, 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 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.