The Abercrombie and Fitch period was a bit confusing because they seldom catalogued the S and SO guns under their real grade designations. As a previous poster mentions, the Garcia SO4 and SO5 were changed from highly engraved field and European style light pigeon guns into very different, lightly engraved, heavier competition guns in the eighties and nineties. In 1984, Beretta sent American skeet shooter Mike Thompson to the Olympics with a couple of 682s, and would have sent him with SO4s if he had wanted them. Unfortunately for Beretta, Matt Dryke won the gold medal in the Olympic Skeet event with a $300 Remington. From that point forward, Beretta initiated a well coordinated loyalty program for International shooters. In the eighties, when the SO4 competition guns were marketed, they were available at very reasonable prices compared to the very similar SO5 that replaced it in the nineties. Beretta USA was selling shelf worn unfired SO4s for less than $4000 in the mid to late eighties through their pro shop in MD. My SO2 light pigeon gun cost me exactly $2100 in 1987. It had a water mark on the checkered wood butt, but was otherwise new and unfired. Shortly after the SO6 and the second generation SO5 were introduced, the party was over and the SO5 was being sold for at least twice the price of the nearly identical SO4.