Nivaflex Unbreakable Mainspring N9172A for Venus caliber 170 Chronograph - Alloy

Nivaflex Unbreakable Mainspring N 9172A for Venus caliber 170 Chronograph movements, 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.