Who made this Coronado radio?

[radiotvnut]

I just picked up this 5-tube Coronado from around 1960 and am trying to figure out who made it. It's a model RA 48-8257 and their is an EIA source code of 786 printed on the label. Next to the EIA code, there are the letters "HGRC".

This is a standard AA5 radio with a phono input jack. It is built on a metal chassis and used several wax paper capacitors. By 1960, I thought most everyone (except Zenith) had switched to PC boards. I also thought that everyone was using those RC component combinations by that time, as well.

This radio uses a 6 1/2" speaker and I think it was considered a "hi-fi" model, as far as AM table radios go. After a recap and a new speaker, it performs well.