Looks like a CTC38 or 39 chassis. The front door tilts down for other
controls.
Look on e-bay for RCA brochure, they do come up often.
CTC 38 & 39 would have spanned apx 1968 til the end of tubes in consoles.
Zeniths evolved slowly & RCA took one leap so no real hybrid consoles..
73 Zeno
LFOD !