Kris Trexler answered: "Thanks for your message. Unfortunately my camera is not in working condition and it never will be." But for getting an impression of the picture quality of a RCA TK-41 he recommended to buy a DVD copy of the Ford Show in color which are available on
http://www.ernieford.com/TVSet.htm
The later 1959 shows are in color and most of the 1960 and 1961 shows. I think, this is an interesting alternative.