RCA date of manufacture?

[electroking]

Hello,

This is a Canadian made model (as printed on the yellow label), that
is why you did not find the model number. I have a CD-rom of
Canadian made radio schematics that covers 1938-1948, and that
is fairly complete, but this unit is not included. If you look at the
selector, you see a 33-78 position, and another one that says 45.
RCA introduced the 45 RPM disc around 1948 and they marketed
their own dedicated changer, for those 7-inch discs with a big
central hole only. This must be what is missing inside the cabinet.

From these facts I would say that the date is circa 1949-1951.
Furthermore, the requirement for a receiver license in Canada was
lifted about 1952 (I think it was lifted just before TV broadcasting
started in September of that year, but I am not so sure).

Your best bet to find info regarding this unit would be a collection
of Radio College of Canada supplements. Good luck.

By the way, the radio chassis seems to have a three-section variable
capacitor, which suggests that this is a better than average radio
with a RF amplifier stage.

P.S. The patent date of 1949 also gives this as the earliest possible
year for this radio.