I am looking at a 19-2 2.5inch with a nickel finish. It's at a gun store here in town. I had the store employee remove the grips but I did not see an "N" stamped on the frame. There was an "R" and a "L" with another letter stamped low on the frame. Is this a factory refinish? I plan on carrying it so actually any finish besides blue works for me. What are your thoughts?