S&W .357 Magnum
I have numbers all over the darned thing... The serial number I believe is on the butt of the revolver... AHS5XXX
there is also a number on one side under the grips 253X6 surrounded by a S then an F5. On the other side is the number 7670 with a G in a circle and a T inside of a triangle.
The weirdest part of this is on the left side of the frame below the cylinder and above the trigger is the stamped value "W.R.P.D."