The picture is obviously matted in. No 1959-era TV picture EVER looked THAT good. Everything was taken off the air -- there was no cable. We had drop-out, lines, static, snow and everything else. A 21-inch picture was the biggest that you could get.
1952 episode of the TV series "The Magic Clown", which ran on NBC, and featured a clown doing magic tricks. The program was little more than a plug for the sponsor, and was done on an ultra-low budget