NEWALL Security Mainspring #1272 for Gruen calibers 817 thru 819 - Steel

NEWALL Security Mainspring No. 1272 for Gruen caliber 817, 818 & 819 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.