You radio uses 6 volt tubes so the lamp should match. If it's a screw base #46. Older radios used these. #40 would also work with reduced current & light output.
If your radio has a bayonet base lamp use #44 or #47, reduced output.
Norm
:My Crosley is missing the dial lights. What size can I use? I'm not sure what model it is but in ink on the back chassis lip is stamped "Sixty One." and the tube lineup is 80, 42, 76, 6D6, 6A7, and 6B7