This is a late 1960s patent decal pickup. I believe it was removed from a Les Paul Deluxe. There are no mounting rings, and there are signs of modification on the upper and lower screw mounting points on both sides. Originally, the holes in the protruding parts on both sides were not threaded, so a nut was soldered to one of the feet. However, there is nothing on the other foot, so you will need to solder a nut or find a clip nut of a suitable size for the screws. The chrome cover is not soldered. The DC resistance is approximately 6k ohms, and the transparent tone truly shines, especially in the neck position.