grips are Keith Brown roper's. They are nice.
It's a 27-2, I think around 1965-67. I have the history of the gun's service somewhere around here. I guard it so securely I have a hard time finding it. Most of these for APD were nickel and 3 1/2". I'll see if I can find the pic showing the markings. BTW, its one of my most favorite smiths. BFF.
Charlie