Today when I was riding my new to me 1981 Honda CB900C the radio tuner knob broke. So I quickly placed it in my pocket and kept on riding. However I didn't see that the lower balance knob slip off later. So it is missing in action. I installed some junk drawer replacement knobs for now, but would like to try and find a replacement set. I think this radio is from about 1981/82.
Probably lots of others from the era would fit.
I have some other newer head units I could install but would prefer to keep the Realistic and not spend a lot either.
Time to find those old cassettes.........