Posted by Jason G. Harrison on February 1, 2008, 9:27 pm, in reply to "LC Smith hand down"
The prefix FWS means your gun is a gun from 1945-1950, when Marlin took over. Go to the FAQ page on this site and it will lead you to a serial number search database. You must include your "S" though for it to be right.
I am quite sure Drew just over looked the "S" in his reply to your post, very easy to do.