please help ID this radio

$30 at a local garage sale, my first antique radio. AM, SW, and police bands. The only company names I see are T. R. Corp and Maseltine(sp?). The latest patent number appears to be awarded in 1938.

I haven't tried to power it up as I don't have a variac and I'm not sure what problems I may encounter. The seller said it hadn't been plugged in since the 60's. Other than exterior scratches and yellowed dial plastic, it seems to be in excellent condition.

rear view
sticker
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