Well it's a match-conditioned rifle, but the question is whodunnit? Could have been a service team, perhaps Air Force (not all got marked AFPG), but also could have been done by any of the retired team armorers who specialize in building them for customers. I'm guessing it was a 1959 NM that was upgraded to 1962 standards, it has all the tricks used by many service shops. That has always been the problem with match guns like this... you just can't tell who built it and there is rarely any documentation. Nevertheless, you got it at a good price. See if you can get any history from the family through the dealer, it's worth the effort.