That's a very interesting set. I poked around in Riders up through 1950 and did not see anything that matches that cabinet and knob layout. Is there a KCS number on the television chassis? Could it have been a custom job, or possibly they had another source of service literature for the clubman models? I suppose it could be in one of the early RCA red books.
I found another VK thread that had that same set. If Chuck A is still around maybe he will chime in with some details.
http://videokarma.org/showthread.php?t=248881