[Arran]

 I think that those fluted pilasters on the front corners were toned dark as well, they may have had sort of a rubbed look to them. I used to own a Rogers battery console from that same era and it had something like that. They were all finished with a gloss lacquer by the way, I saw an all original rolling pin dial console about 20+ years ago and that was how it was.
 The chassis is rather interesting, there are several extra socket holes punched into it that they then added caps to cover up, no doubt that they used that same chassis for several models, maybe in the 10-12 as well. Not all the holes would have been for tube sockets of course, there is probably one or more where it is used for an extra IF can or an RF transformer.
Regards
Arran