Rezista Mainspring No. 317A for Bulova 10AF and Font 30 - steel

Rezista No. 317A steel mainspring for Bulova 10AF and Font 30 movements, and quite likely others. 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. plethora