Nivaflex Unbreakable Mainspring N3270 for Berger 2, Chezard 60, 60/1, Essor 214 Gruen 313 - Alloy

Nivaflex Unbreakable Mainspring N 3270 for Berger 2, Chezard 60, 60/1, Essor 214 Gruen 313 caliber movements plus perhaps other similar ébauche movements as well, alloy, 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.