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Apparently my information is older than your set. You use miniature tubes and the diagrams I have use octal. The date is around 1946.
Having said that, I imagine that the engineers didn't try to reinvent the wheel and thus probably used almost identical circuits, upgraded to more modern parts, by the time yours was made.
I have model D-1645 information. The tube complement is 6SA7, 6SK7, 6SF7, 6SJ7, 6V6, 6X5. The unit looks almost identical to yours except the wood trim in front of the speaker grille us a different shape. It has AM BC and short wave (9-15.6 Mc) bands. No info on the record player section.
I will scan it and post it if you like.
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