I know this is long old, but that was the first production Turbo Grafx unit. It was given to the owner of TZD when he was working at TTI personally. When TZD sold their inventory I was able to purchase the #1 unit and a bunch of rare counselor strategy game player guides (like Nintendo's service center used) and a giant Bonk among other things.
I sold the #1 TG to the ebay seller, I can tell you he lost a lot of money on this because he didn't buy it from me at the price it sold for.
Either way, I hope this help's for posterity's sake. I also had some Turbo Grafx protos (a bunch) over the years but most of them have been purchased by one buyer over the years.