Newall SPECIAL Mainspring #1262 for Bulova caliber 6AD - Steel

Newall The Special Reverse steel mainspring No. 1262 for Bulova caliber 6AD movements and perhaps others as well, new in envelope. Not entirely sure what is special about this mainspring other than it was printed for distribution by a parts house in Wichita. 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.