Borel Mainspring No. 3020-E for Omega R13.5 (240) - Alloy

Borel No. 3020-E alloy mainspring for Omega caliber R13.5 (240, 241, 242) 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.