Here are pictures of Philco 90 and 90B:
http://oldradioarchives.com/archive.php?page=p6
There are different version of the chassis also. 2 - 45 tubes for output, 1 - 47 tube and 2 - 47 tubes.
Norm
:Hello I have a philco model 90 that has no cut out on the bottom. My whole radio bottom contacts the table on which it sits where ass I have seen model 90's that have what looks like legs or feet at the corners. Did they change to the less appealing cabinet later on in production?