Another shot. the magnums have smooth triggers, rounded hammers, and Kim Ahrends grips. The 15 sports PC magnas and grip adapter. This was my competition gun for a long while when i lived in VA. Hard to believe there are 15,000 rounds through it.
I have a 17-3 from the late 60's and just purchased a 1973 14-3 because it had the target hammer and target trigger with the trigger stop. It also had the oriiginal box, tools and paperwork. But the real treat when it showed up is the Single Action only lockwork! And in Special Features on the box it is filled out SA.