You will need to provide a detailed description of ALL markings, whether it is a revolver, single shot or semi-automatic, and barrel length.
No serial number = no answer.
Smith and Wesson is the make.
No serial number provided.
Not a valid S&W serial number.
1977
@1987.
1916
@1983
No serial number given.
Serial number.
Made @ 1981.
Look on the butt of the revolver.