HR Mainspring A727 for Waltham 6s movements No. 2219 - Steel

HR Mainspring for Waltham 6s movements, Factory No. 2219, HR #A727, steel, new in envelope. See image for precise characteristics. 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.