NuVigor Mainspring No. 29 for Gruen 124, 330 - Steel

NuVigor Mainspring No. 29 for Gruen 124, 330 caliber movements and perhaps others, steel, new in envelope. See images for precise mainspring specifications. 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 a pretty good job of representing the item.