Hello - In my continuing search for a reasonably priced Model 19 (hint hint), a question has come up: How can I tell if the target grips on a particular Model 19 are original, since I don't believe they are numbered. Are there any telltale signs, such as color, etc.? (I've seen dark brown and light tan, not sure if that means anything). Or are you basically at the mercy of the honesty of the seller as to whether they are the original grips? Thanks.