Paulson Mainspring No. D1310 for ETA 761, 840, 1029, 1057, 1201, 1215 - Steel

Paulson Mainspring No. D1310 for ETA caliber 761, 840, 1029, 1057, 1201, 1215 movements and perhaps others, steel, new in envelope. See images for precise mainspring specifications. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.