[drh4683]

I believe Jack is saying that a novice or one who is only slightly familiar with TV's could possibly mistake this set as a color set at a glance, particularly from the rear because of similar characteristics to that of a color set. Those more familiar with these TV's obviously know it's not a color because we know what controls are to be present.

The conical shaped CRT cap as used on this set first appeared on 1970 models that used the fiber board back covers. Both B&W and color used this style of cap, hence why I believe Jack made the comment regarding the similarities and the potential for error on the part of the novice. The triangular shaped cap is exclusive to the round screen color CRT's, while the diamond shaped cap on color sets identifies 1965-1969 models.