Early Color Television
RCA CTC-4 Director 21
(click on picture for high resolution image)
The CTC-4 was introduced in 1955, and has a 21 inch round picture tube. It came in several cabinet styles, including this console version named the "Director 21". More information on the CTC-4 is available at Ed Reitan's site. Here is technical information and a magazine advertisement. RCA also made CTC-4 based sets for other manufacturers.