Samson Mainspring No. A39 for Eterna caliber 833, 834, 835, 1076, 1077, 1079 - Steel

Samson No. A39 steel mainspring for Eterna caliber 833, 834, 835, 1076, 1077, 1079 automatic movements plus perhaps others, 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.