Waltham Factory Mainspring for 0s & 3/0s 1907 Model No. 2230 - Steel

Waltham Factory Mainspring for 0s & 3/0s 1907 Model movements, #2230, steel, new in envelope. See images for further details. These came in several different strengths and those that I can provide can be selected from the drop-down list. An as such, I likely have several of these in each strength so the one you get may differ slightly from the images. Some of these mainspring may have been on the shelf for quite a few years but I inspect all these steel mainsprings carefully before I list them, and I guarantee them unconditionally. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.