[Arran]

In Canada the RCA-Victor Company of Montreal, and the Canadian General Electric Company of Toronto shared chassis with one another. It was not quite like in the U.S where RCA made chassis for G.E and Westinghouse from 1930-34 though, they were actually made in two separate factories, and they used entirely different cabinets. In the U.S that was the result of an anti trust judgement against RCA's patent pool in 1930, it did not apply to Canada. Many Canadian RCA and G.E sets shared chassis, right up into the late 1940s, but the ones from 1939 onward were often uniquely Canadian designed like the JK-70 or A-23 for examples.
The RCA version of this set was an 8T in the U.S, or an 8T1 in Canada, I picked up a chassis from a U.S RCA 7K for replacing my badly rusted chassis in my CGE E-81 about a year ago. The E-81 on Radio Attic is entirely original cabinet wise, note that the strip of veneer bellow the knobs was shaded like the rest of the bottom 3'' of the cabinet. It would be interesting to have an example of each set to compare, although I think that the U.S E-81 would likely win given the tuned R.F amplifier stage, the Canadian E-81 has separate mixer and oscillator tubes which may help on shortwave, both wasted a socket on that useless 6H6 tube.
Regards
Arran