Picked up my first Color Tube set-for only $1!!!

[Olorin67]

the best way to date these sets is to look for date codes on the tubes, my portacolor seems to have nearly all original GE tubes, and they all had '67 date codes. some other parts such as speakers and caps can have date codes also. I suspect yours is a fairly early set since the small knobs are all on the far right, and there are exposed screws on the front. the first few model years were like that, with minor color/styling tweaks. Maybe not the first couple model years, but probably 68-69-70ish. In the 70s they started moving knobs around.