I was left an extinsive collection of firearms by my father. Was looking thru a few pieces last night, and found a model 19-3 2 inch barel. It is blued in pretty good shape. Got to looking and found S.C.S.O. stamped on the left side of the frame. He was an extensive collector of smiths and we have lived in N.C. for all our lives. Does any one know what that stands for? He is no longer around to ask so just thought someone might be able to shed some history on this smith. Thanks. Richard