After 10 years of searching I was beginning to think none of the few final M2 pads that were built had survived the gaming and electronics shows of 1995-1996.
One finally surfaced, along with some other really nice M2 items.
Even more surprising is the fact that it is a fully functional pad. I had been told years ago by a Panasonic employee that the final pads were mock-ups, so it was even more of a surprise to find a pad like this.
There are a few pictures in gaming magazines of the time showing this pad alongside the console.
The pad has an analog steering wheel, analog joystick, D-pad, 7 face buttons, 2 shoulder buttons, and a trigger button on the back.
Pictured next to a black M2 proto pad.