And, as we move on to 1947, there is no ad in QST by the Cardwell Company.

I would take a wild guess, based upon my experience over the years, that the
company spent so much money on development of the CR-54 that they finally
threw in the towel and that none got out the door. I have seen what appears
to be photos, though, so there may be one that was made. But, the technical
bulletin should be around, so you can drool a bit.

73, Colin K7FM