Dumont RA 103 "Doghouse"

[manhattanman]

There's currently one of these on eBay.

Did these sets come in two different cabinet physical configurations? The one listed appears to have completely vertical side panels. It does have the finger handle on the channel knob, which I think was the older knob. But, it appears to have the post '47 tuning eye.

Mine has slanted, diagonal side panels.

Are these different physical cabinet configurations date related?