NuVigor Mainspring #588 for NY Standard 16s No. 1032 - Steel

NuVigor Mainspring #588 for 16s New York Standard, Factory No. 1032, steel, new in envelope. See image for precise mainspring specifications. I specialize is 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.