Found this.....sort of a little crash course on these sets. No mention of the little Sony. There IS mention of the two "mythical" sets that showed up in magazines though:
http://www.taschenfernseher.de/e-history.htm
I wasn't even aware there was a TR-1000. I thought the "second coming" of these Panny sets came with the TR-1010. My little DEAD TR-1010 that showed up this morning. I got it for like $10-$15 from ebay. It's deffinately another basket case, but did at least come with ALL it's accessories and another of the odd little Panasonic wall warts. Just buying one of those Panasonic AC adaptors is like $20-$25 if you get it by itself on ePay.