Stevens shotgun
Keeg, first off, happy shooting and HOLD ON TO THAT STEVENS. In their day they were workmanlike guns - built for the common man. But they were well made and built to last. My dad has a model 94C 16 gauge for over 50 years now and it just won't quit!
U.S built guns were not required to have serial numbers prior to 1968 or so, when the Brady Act took effect, hence you won't find a serial number on yours, which by the way is quite an old machine. I am fairly certain yours is a fixed half choke.