I think this is a Jenkins Scanning Drum versus Scanning Disk television.
http://www.earlytelevision.org/jenkins_202.html
There appears to be 7 surviving sets according to the counts on the ETF web site. I wonder if this is another unknown set. I think the price is high based on sales in the last 5 years. I'm lucky I got my Western mechanical TV when the prices were low about 4 years ago. I found an Escutcheon from a Jenkin's JD30 radio on eBay last year for $20 so I now need to find the rest of the radio.
Can you imagine the guy who took the escutcheon off and throwing the radio cabinet away?