Hey Brian,
WELCOME to the GTA Forums !!! Ain't it A GREAT PLACE TO BE !
I don't have any airguns for sale, let alone a Theoben Olympus, but you will have better luck posting in the Classified Section here...
So now that you are a member, I hope to see you here often, and let us know about that Tehoben Olympus, I could not find it listed in the Blue Book ? It sounds interesting !
Bill