Looking for information on the following shotgun:
12 ga. 30 inch Single shot break open shotgun
Mass. Arms. Co. Chicopee Falls, Mass. (stamped on left side of receiver)
Stamped on the barrell is "choke bored patented Dec. 11, 1900"
Stamped behind trigger guard on bottom of receiver: RE787
Plain stock no checkering no other markings on gun
Other searches on the internet has not produced much other than it was possibly made by Stevens Arms & Tool Co.
This gun was purchased in 1971 in Rib Lake, Wisconsin. Gun will fire intermittently but won't eject the shell. No plans to use this gun for anything other than hang on the wall but just wanted to find out how old it is and if it's worth anything.