[Arran]

Is it tobacco tar or kitchen grease mixed with dust? I've seen plastic radios that had about the same look to them either way, except that grease is stickier, and doesn't stink as much. I have a Deforest Crosley console that was in the house of a chain smoker, the set smelled like an ash tray for the first two years that I owned it, then faded, the chassis still has an interesting patina though.
Regards
Arran