Nivaflex Unbreakable Mainspring for A.S 1215, 1216, 1253, 1265 - Alloy

Nivaflex Unbreakable mainspring N8197 for A.S. caliber 1215, 1216, 1253 & 1265 plus perhaps other similar ébauche movements as well, alloy, new in envelope. See images for further data and 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.