Dynaflex Mainspring for Benrus AN & AO & Font 150, 152, 166 - Alloy

Dynaflex Mainspring Benrus caliber AN & AO plus Font 10½ ligne caliber 150, 152, 166 movements plus perhaps other similar ébauche wrist watches, alloy, 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.