There likely is no "period correct" CB that you would want. CB by the way was created in about 59 by the FCC by turning the 11 meter amateur radio band into the CB. Early radios that would be "period correct" would be vacuum tubes, not transistors, and would be 2 or 3 or 4 or 6 etc channels. "Back then" you had to buy a pair of crystals for each channel that you wanted to use
Something like this Johnson was "top of the line" back then
