HR Mainspring No. 436 for Gruen Veri Thin caliber V7 Pocket Watches - Steel

HR mainspring No. 436 for Gruen Veri Thin caliber v7 movements, and quite likely others, steel, 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.