NuREZISTA Mainspring #1501 for Longines caliber 5L, 5LN, 12.19, 15.18, 10.39, 10.40 - Steel

NuREZISTA mainspring #1501 for Longines caliber 5L, 5LN, 12.19, 15.18, 10.39, 10.40 movements and perhaps 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.