NuREZISTA Mainspring #560A for Waltham 16s movements Factory No. 2227 - Alloy

NuREZISTA Mainspring #560A for Waltham 16s movements, Factory No. 2227, alloy, new in envelope. See images for for further details. 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 an adequate job of representing the item.