I was down at my parents' house today picking up some furniture they were giving us. My mother also gave me some boxes of stuff of mine that she had in storage. Inside one of the boxes was a set of pickups. When I saw them, I remembered what they came out of. They were in a Gibson Custom Shop XPL from the early '80s (still kick myself for trading that guitar... ). I had them swapped out for DiMarzio SDs. I was surprised I still had them. They must have been in storage for over twenty years. Anyway, I tried to do some research and there is confusion as to what they are. T-Top? Shaw? Early 498? They have the Patent Number 2737842, which is for a Gibson bridge and tail piece.
Here are some pics: