Marco Mainspring No.3359 for Brac caliber 37, 39, 40, 41, 42 - Steel

Marco Mainspring No. 3359 for Brac caliber 37, 39, 40, 41, 42 movements, and perhaps others, new in envelope. See images for precise mainspring specifications. I specialize is 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.