Yesterday, 12:18 PM
In cases I've had like this i just clean the cracks out and get them close to the veneer color. (Stain or dye to darken maybe in that one upper crack that is the largest and try to lighten that upper crack on the other side) Then i would lay the radio on its side and fill the cracks with gloss lacquer with a small brush until they were filled ( many coats, the lacquer will shrink considerably) . You are trying to just fill the cracks in and not the surrounding veneer. Sand etc and then a top coat and call it good. You will be surprised at how good this looks...imo. The eye will pass over the "imperfections" as they are no longer lower than the rest of the finish and keeps the radios character.
Bill
Bill