Most people would probably leave it as is. You could touch-up the top, but it would take some custom tinting of the lacquer. Several coats then a wet sanding of the entire cabinet followed by buffing it out.
It is easy to make it look worse attempting this, but it is a common approach for photo finish cabinets and could also be used here.
Kirk, if that is bare wood exposed on the top it appears to have a bit of color to it. I would put a small drop of lacquer on it and see what the color looks like. Perhaps they used clear lacquer on the top? If the color is close a touch up spray might help.
Jerry
I will try the lacquer first, then try to match it if that does not work.
If that does not work then I will just leave it for now. I like original and can always refinish it later
When I said , several coats, I meant on the area with the finish missing only. The tint would be to match the yellowing that has occurred to the original finish. BTW, yellow is not good, very little brown in gloss or semi gloss lacquer will do it.
Ok,
I have done the most I can without ruining the originality of the radio cabinet. I am not super excited about it but I like that it it still has that original look. We'll say that it gives it character.