Nivaflex Mainspring for 16s Hamilton No. 534B / 718050 - Alloy

Nivaflex Mainspring for 16s Hamilton Grade 992B and 950B Movements, Factory No. 534B / 718050, alloy, new in envelope. See images for precise mainspring specifications. I specialize in hard to find watch parts and all watch parts are guaranteed. Images do a pretty good job of representing the item.