Waltham Factory Mainspring for 10 ligne Watches No. 2229 - Steel

Waltham Mainspring for 10 ligne movements, # 2229, steel, new in envelope. My handy-dandy factory manual says this is also used in some 10½ ligne movements too. These were available in several different strengths and those that I can supply are shown in the drop-down list. 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. See image for further details. Images do a pretty good job of representing the item.