A 1941 Picture of a brand new TRK12 chassis for sale on eBay. Too expensive unless you nhave a TRK12.
http://www.ebay.com/itm/1941-RCA-Victor-home-television-receiver-Press-Photo-29-/400409865949?pt=Art_Photo_Images&hash=item5d3a49aedd

A nice reference to have if you are trying to restore one to original.

I'd like to have one that looks like that!

The picture is actually from 1939. You will notice that the set has an extra chassis - located just below the main chassis. This was to use the set at the World's Fair:

http://www.earlytelevision.org/rca_trk-12_mods.html