Nivaflex Unbreakable Mainspring N6386 for MST 351, 352, 364, Brac 2041 - Alloy

Nivaflex Unbreakable mainspring N 6386 for Brac caliber 2041, MST caliber 351, 352, 365 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.