Please check out my 1930 Edison R-6 radio which is rebuilt and working. Video included in Ebay ad. Super rare radio and the last product from the entertainment division of the Edison Co. I'm located in So. Calif. and can ship. Marc Capralis
One thing I forgot to mention is my tech who rebuilt this radio was not able to revive the 1930 power supply, so we substituted an Edison 1929 power supply, which is basically the same as the 1930 with two push-pull 45s and an 80 rectifier. The only difference is the method of connecting the receiver. The 1930 receiver is connected using a plug instead of connecting individual wires, so my tech made a socket to plug in the receiver.