Came here just to say...
A business associate and I attended the Tulsa Wannemacher show last year and apparently met the LTRiker from this thread. He was a vendor at the show withwith several tables of very nice weaponry. Including the S10 Omega II.
my companion for the day looked it over and it was, indeed, pristine. He told us that it had been given to a close friend of H. Koon in 1970 and that he purchased it from that persons widow in the early 1980's (I forget what year he said). He also had an original sale brochure for the company with it. Price was around $40,000 and a nearby dealer was offering several guns plus cash while we were at the table.
The gripcap had a gold "B" on it if that helps figure out who it may have been given to.
We did not buy it, but my business associate sent me a link to this thread yesterday after he and another person went on a web search while discussing the rifle.