[jerryhawthorne]

OP, I would guess a stain and not a lacquer toner. The did not do that on blond and I would guess at the vintage of your radio they did not use lacquer at all. As for the type of stain, water or oil, others perhaps know. After application you may need to seal it with something like a wipe on poly. Especially if you chose a water base.
Heck, what do I know?
Jerry