Rezista Mainspring No. 110 for AS 748, Bulova 4AK, 4AL, 5AE, 5AP, 5P, 5PP movements - Steel

Rezista No. 110 steel mainspring for AS 748, Benrus E, K, Bulova 4AK, 4AL, 5AE, 5AP, 5P, 5PP caliber movements, and quite likely many others. See images for precise mainspring specifications. I likewly have several of these so he one you get may differ slightly from the images. 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