[John Folsom]

Wayne, the Sparton just says "Sparton". Sandy G, the one in the roll around cart is the Zeinth. The side panels and top come off for easy access. Zenith made a small number of sets, but like Silvertone (and others), decided not to enter the Color TV market until the technology had matured a bit.

Here are a few more.

First, the GE Model 15CL100 15" set. This set uses the odd 6BU5 pentode high voltage regulator tube (I think this was the only set to ever use that tube).
Second the Sylvania 15" set, and third the CBS Model RX90 15" set. This was the forerunner to the CBS 205 19" set which was sold commercially. The color bars are of the RX90, using the Hickok 656XC NTSC color bar generator circa 19555.