Someone locally offered me a trade for my high standard sport king .22 pistol and I don't know anything about the gun that he has offered me. It is a smith and Wesson model 10 with a 4" barrel. He says that he purchased it used through buds about 4 years ago,and he is guessing that the gun is 10-15 years old. He has offered to give me the serial number so that I can call smith and Wesson and see how old it really is. It's my understanding that this model was originally produced in 1899. I've only owned two revolvers in my life and neither of them were smith and wessons. Is this particular gun a good shooter? Sa/Da?? Thanks for any help you can give me.