[Arran]

That's the ten tube version of one of their deep chassis series sets from 1931-32. While it may have been made by RCA at the time, thanks to the Supreme Court anti trust judgement in 1930, most of the engineering was probably done over at G.E and or Westinghouse.
From what I heard these sets are real thumpers once you get them playing right. I've only worked on the smaller 8 tube Canadian G.E/RCA/Westinghouse chassis from that era and even those are good performers.
Regards
Arran