Newall Security Mainspring #1252 for Gruen caliber 115, 117, 119, 123 - Steel

Newall Security steel mainspring No. 1252 for Gruen caliber 115, 117, 119, 123 movements and perhaps others as well, 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.