I have an old Steven's Favorite. I don't know a great deal about them. This one has an aprx. 24 in. barrel. 6 inches towards the recevier end is octagon. The barrel is marked: J Stevens Arms & Tool Co. Chicopee Falls, Mass. U.S.A. The receiver is marked: Trade Mark, FAVORITE, U.S. Pat Off & Fgn. On the bottom tang: M 5XX The barrel removal screw is sort of a D ring affair. Any ideas on the Model of this old rifle?
,