Schematics and other information can be found here:
http://www.nostalgiaair.org/Resources/972/M0013972.htm
I believe what you have is an aftermarket/dealer installed radio as the factory version wouldn't have said "Philco" on the dial. From the outside, nearly identical to the OEM sets that Chrysler installed (and which were also Philco-built.) A very common set through the 40s. I've seen one similar in a Packard. Trivia: when Chrysler quit car production midway through the 1942 model year, Philco had a bunch of sets left over so they installed them in console cabinets for home use.
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Bryan G's post in Philco radio information was marked as the answer