Gregory .. A.G.'s on this site .. you could just ask him. Also, I've an almost exact duplicate of the knife you pictured .. however, mine is scaled in wine micarta, slightly different damascus pattern, stamped SEKI CITY over JAPAN on one side, PARKER/FROST's Flying Eagle stamp on the other. I purchased 2 of them new from Jim Parker (PKCS) in the mid to late 80's.
WONDERFUL knife. Only issue ..on both of them.. the back spring was so hotdurn stiff it was a pain to close. Gave one to a friend yrs ago, gave the other to my daughter ~ a yr ago. :)