I've lately been researching the art of early mechanical television and from what you described makes me wonder if it could be John Logie Baird's early experimental mechanical colour TV set from 1928? Question, was the red, green and blue segments on the disc a series of red, green and blue holes like in this picture
http://www.earlytelevision.org/image..._colortv_1.jpg or was it like this colour wheel
http://blog.modernmechanix.com/mags/...946/colors.jpg ? And I read that Baird's colour mechanical set used at least two lights, a white lamp for the greens and blues and a neon orange lamp for the reds, did this set have two or more lights?