[Hallicrafters] Hallicrafters DD-1 existing?

[Waldo Magnuson]

    I have a Hallicrafters DD-1 (s/n H-80534) which I have had about two 
years.  It works perfectly.
    Besides my DD-1, I know of one in Chuck Dachis' collection and one 
in the Western Historic Radio Museum in  Virginia City, NV (Harry 
Rogers) and one owned by Tom Siglin in Vestal, NY.  Do you know of any 
other existing DD-1s?  I'm trying to get an idea of how may still exist 
and would appreciate any leads.
73, Skip W7WGM