Matt,
How certain are you about the model number?
I have a copy of Stein's 1930-1942 Silvertone book, and the only models it shows with that exact dial design begin with 44. Specifically: 4441, 4450, 4451, 4465, 4485, 4486. It doesn't list a 4585 at all, but then I don't know how comprehensive this book is (My 6230 isn't included
). Would it be worthwhile checking some of these other numbers?
Paula