Called Ruger, all they could tell me is that it was just a regular MK 2 in 1985 when it was shipped. Called Safari Club International they were no help, the girl said their records only went back to 1992. Then a call to Mag-na-port gave me all the info I needed. The gun was bought by them, hand engraved and ported, placed in a custom box and then shipped to Safari Club for their international convention. The man from Mag-na-port asked a few more questions about the markings on the gun and determined that it was one of 15 that they had done for the convention.