This was the top of the line tabletop for Firestone in 1938. It's similar to the 7423-1 shown above, but with the addition of a tuning eye. This brings the total to 7 tubes. "You will be thrilled with its rich tone, selectivity, and "pick-up power". Put this radio on your "Must See" list!" I agree!
This model, being the top of the line, seems to be fairly uncommon. I am not lucky enough to have found one yet.