Side By Side

On the left, the regular RCA TK10 monochrome camera, on the right, the CBS Field Sequential Color camera. As you can see, the color camera is a modified TK10. At the green arrow, notice the new metal box above the lens turret. That is the covering the red-green-blue spinning wheel that comes between the taking lens (the top position on TK10, 30, 11, 31) and the IO tube that gives the camera it’s “field”.

Source