[Electronic M]

You might want to double check the chassis number in the black "CTC-7" it's probably a CTC-9... Both the CTC-7 and CTC-9 had a model that used the same black cabinet... The only external visual clues (which are present to prompt this comment) are all CTC-7s paint the outer edge of the plastic CRT mask black (the CTC - 9 leaves the whole thing grey) and there's a difference in brass badging on the front bottom between CTC-7 and CTC - 9.