Trufit Mainspring for Waltham 6¾ Ligne Model 670 Factory No. 2244 - Steel

Trufit Mainspring for Waltham Factory No. 2244 for 6¾ Ligne Model 670, Steel, new in envelope. B&C Trufit mainsprings were distributed by Barton & Chase of Philadelphia but I'm pretty sure they are made in Switzerland. See image for precise characteristics. 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.