NEWALL Security Mainspring #148 for Bulova 9P & Gruen 252, 612 - Steel

NEWALL Security Mainspring No. 148 for Bulova caliber 9P and Gruen calibers 163, 165, 167, 168, 252, 612 plus perhaps other similar ébauche watches, steel, new in envelope. See image for precise characteristics. 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.