I am still researching but finding out.
Stevens introduced this gun as the Model 5000 in the early 1920's, changed the designation to 5100 about 1931, and changed it again about 1941 to the Model 311. Some were marked with both 5100 and 311."
Your gun was made sometime between 1920 and 1931. I know we all turn to 1968 as the year serial numbers started but that is the year they became mandatory. Stevens has numbered their guns since 1878.
"If a man does his best, what else is there?"
- General George S. Patton Jr
Last edited by OEF-Vet; February 22, 2013 at 08:49 AM.