I believe this is the radio steveg is refiring to. The 40-46 dash is the same. The 41 or the 42-46 radio will certainly work but I've never seen any literature that shows the particular radio offered in 1940. The radio that Bill Schlickling refired to has a different part number than the 1941 radio linked above.
Bill, where do you find the number you're refiring to on the radio ?
I have a radio like the radio I linked to on ebay. The tag on the side of the radio has B41-137912.
