The radio receives beautifully. Nixie tubes are stable. Has the CW filter. The RIT mod was done. Serial number 943. It tunes up and transmits, but I didn't test for full power output, wanting to wait until tomorrow.  There was some paperwork for the radio tucked in the manual. It was Originally owned by James Craig, of Rye New Hampshire.
He sold it to Charles Miller of Kingston Ontario on May 9, 1991 for $1000.  For me this radio is a keeper. I always dreamed about such radios as a kid but could never afford them. 
Now that I'm retired, I have time to search them out and enjoy them.

I could not have said it any better.  A rare find and having the provenance makes it even more special.