I have two of those Proto's.
The story that I got from someone ACTUALLY in the Lynch camp, is that back in the day there was no internet, Paypal, or Ebay......so people would get the address for ESP in Japan, and would order a "George Lynch Kamikaze", using money orders, checks, etc.
All of the ones ordered before the mass produced one's, had a darker shade of brown, and no serial number, because it was considered a custom order, and they only planned on making a few. But popularity grew, and they began to actually produce them as a series, instead of "one off", special order, builds.
If those proto's are worth that much, I would have sold them a long time ago. This seller is either delusional, or sadly mistaken.....and yes, mine are both played and signed by George, too.