Nivaflex Mainspring for 16s Elgin No. 2542 - Alloy

Nivaflex Security Mainspring for Elgin 16s, Factory No. 2542, white 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'll note that I never did buy the whole "self-lubricating" that these claimed, they still need to be properly lubricated upon installation. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.