That'll most likely be from the Bush & Lane Piano Co. in Holland, Michigan.
That bakalite cabinet certainly dates it from the late 40s into the 50s, but the newest Bush & Lane radio in my files was produced in 1930; and yours certainly came after that. Could be a buyout deal...I just don't know as I have little data in my musty collection of books and magazines. Here's some online info tho:
http://www.radiomuseum.org/m/bush_usa_en_1.html
Maybe somebody here or at radiomuseum.org knows more?
Sure is a pretty little set...good luck with your search-