Endurence Mainspring No. 210 for Bulova 10AN, 10AE, 10AB, 10AR, 10AM, 10AZ - Alloy

Endurence Unbreakable Alloy Mainspring No. 210 for Bulova caliber 10AN, 10AE, 10AB, 10AR, 10AM, 10AZ movements and perhaps others as well, 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.