[Arran]

Dan;
  Your set is called the "Liszt", I have that set's twin brother called the "Brahms" model, the difference is that the "Brahms" has motorized tuning which they charged an extra $10 for, other then that it's the same as the "Liszt". Your cabinet is a little better then mine, mine needs some chipped veneer repaired on the top, and mine is missing two of the knobs, the outside ones I think. In terms of rarity I'm not so sure, I've seen at least three Deforest-Crosley "Liszt" models for sale on craigslist sites in my region over the past two years, the last one being in the Victoria area. Unfortunately some busy body decided that the four original controls were not enough and added two extras, right through the front panel, next to the band switch. I can't recall seeing another "Brahms" model but I must have seen at least one for sale, I have seen at least two of the "Rogers" equivalents of the 10 and 11 tube chassis models. It stands to reason that the non motor drive version would be more common since it was less expensive, $10 was enough to buy a five tube AC/DC in the pre war years.
Regards
Arran