I threw together something like that for "The Ping of Pong" build where I built a cab out of a ping pong table found in the neighbors trash and spare parts I had laying around. (cause that's the kind of stuff I do when normal people are watching tv)
The coin button is an 8-liner button with a homemade insert printed out on an injket printer.
The coin return is a square 8-liner button with the lense painted black and glued in backwards.
The plate they're mounted in is just a scrap piece of abs textured plastic I had.
It probably would have looked better had I just used a piece of metal or thin wood for the plate.
