I have an old revolver with no name or cal. marked on it. On the cylinder are the numbers 783 and on the handle the letters R.E.B. I think it is a .38 cal but can not be sure. It is stainless steel with a 6 ince barrel and is 10 and 1/2 inches long with wood handle grips. It looks like a Ruger but there again i can not be sure.It is a double action only gun, and the action is loose. Any help in naming this gun would be welcome.