semour duncan modle. the only thing on the back is the letters "DDJ".it was bought in the late '80s.no logos double coil.

well, usually the little sticker has 3 letters. the first 2 are the model, and the 3rd is either b or n, signifying bridge or neck. I'd take a guess and say thats either a distortion or a jazz model. you should be able to tell if it's bridge or neck by where the lead comes out of the pickup in contrast to where the row of adjustable pole pieces are. But alas, I'd probably just call duncan, their support is pretty good.

just dug up my Jeff Beck model. It's a bridge position and is marked JBJ.