Newall Security Mainspring #162 for Gruen caliber 785, Bulova caliber 10W - Steel

Newall Security steel mainspring No. 162 for Gruen caliber 785, Bulova caliber 10W movements and perhaps other wrist watches as well, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. 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.