Yippie!!!!
I found a Gonset Super-12 converter (25) at the Saratoga Springs hamfest today, so I've got a receiver; I got an antenna relay; and I got a variac for the power supply, so I'm all set to start hooking things up.
But (when it rains it pours)...I also found a complete TR-3 station with everything, including the DC supply. That'll do good mobile AM til I can get the real vintage radio going. $200
Also got a decent working scope (Phillips 15Mhz) for $35.