Are you sure that set is from 1964? I just looked at the pictures and could swear I saw a knockout plug on the control panel where the UHF tuner would be, in an all-channel TV. (I had an uncle who owned a Sylvania 23" console with just such a UHF knockout, opposite the VHF tuner; his was almost certainly pre-April 30, 1964.) If yours is in fact from '64, it may have been manufactured either in late '63 or the early part of 1964, before April 30. The only other thing I can come up with, if this is indeed an all-channel set, is that the UHF tuner shows in the same window as the VHF one, when the latter is set to the UHF position. We had a Sears Silvertone all-channel 17" portable when I was growing up that was set up that way; turn the VHF tuner to the position between channels 2 and 13 and, lo and behold, there was the UHF dial, orange with black numerals, not illuminated. Not the most attractive UHF tuner setup I've ever seen, but then again this TV wouldn't have won any awards for best-looking set of the 1960s; as a matter of fact, this had to be one of the plainest looking portables I've ever seen in my life. I had a Silvertone roundie color set in a huge metal cabinet that wasn't much to look at, either. This set had the threaded holes in the base for screw-in legs, which I never did find; I didn't need them as I always used this set as a table model anyway, the three years I had it--until the video output tube socket broke out of the video-amp circuit board in 1973.
