[Arran]

C.R *illegible* likely stands for C.R.T, Continental Radio and Television, that was Admiral's pre war company name, and they used to manufacture lots of private label radios. If you run into a set that says B.R.C that stands for Belmont Radio Corporation, they too used to manufacture lots of private label radios. You could look on Nostalgia Air under Western Auto Supply, I think that they were listed in Riders under that name.
Regards
Arran