Update:

RCA, TRK-12 Phantom Teleceiver

94.0057.607 HR
1939, USA

This TV set, the rarest on the planet, inspired a great deal of awe in its millions of viewers. Built with one of the Fair’s theme materials, Lucite, the inner workings of the receiver were thus exposed to remove any doubts that “magic” or trickery was involved. To demonstrate that the pictures on the screens were live images, volunteer family members were escorted outside to the NBC television cameras, and encouraged to wave back to the folks viewing them inside. Participants received a souvenir card with their name on it, stating, “This is to certify that you have been Televised at the RCA Exhibit Building at the 1939 New York World’s Fair”.