Waltham Factory Mainspring for 4½ ligne Watches No. 2273 / 2241 - Alloy

Waltham Mainspring for 4½ ligne movements, Factory No. 2273, alloy, new in envelope. This is the equivalent of a 2241 when in steel. 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.