Waltham Factory Mainspring for 8½ ligne Factory No. 2240 - Steel

Waltham Mainspring for 8½ ligne "The 400" model movements, Factory No, 2240, steel, new in envelope. I have these in several different strengths and those that I can supply are shown in the drop-down list. 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.