I'm interested in the same info. I have a 12 guage that only says Long Tom and August 12, 1913. I don't see the "J Stevens" anywhere. Where do you find that? This was my Father's gun that he bought used around 1935. That's all I know about it.
If patented in 1913 the shotgun is most likely was made before 1920. There is not really any way to get an accurate date without knowing more about the gun.
That patent date indicates a J. Stevens product.
how old is trade mark stevens shotgun
J. Stevens Arms Company
its worth 325 dollars
J. Stevens for Sears Roebuck.
Stevens
That patent date identifies a Stevens single shot.
savage arms
Savage as the Model 24.
No Model 772. How exactly is the shotgun marked? sales@countrygunsmith.net
Have you tried the Internet?