HR Clock Mainspring No. 868 3.10 x .205mm x 21½" Junghans 69

HR Clock Mainspring No. 868, TONGUE End, Dennison 22 x 3 x 23½¼, steel, new in envelope. Suitable Junghans 69 (J69) movements. 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 is hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item