Waltham Factory Mainspring for 6½ ligne Watches No. 2272 / 2239 - Alloy

Waltham Mainspring for 6½ ligne movements, Factory No 2272 (2239 when in steel), alloy, new in envelope. I specialize is 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.