Looking at the possibilities. There are several Stevens Pocket Rifles, most of them available in .22 caliber with an 18" barrel. Dates of production overlap with the earliest starting in 1872 and latest ending 1916. Company name will only show if it is before or after 1886 ("Arms & Tool" added that year). I think you need to get a copy of Flayderman's Guide to Antique American Firearms and compare your gun to the pictures and descriptions.
Stevens was in business from 1864-1950. They did not have a "pocket pistol" model, but DID make a "pocket rifle" model from 1869-1916. Am aware of no specific production data based on serial numbers.
The Stevens model 89,22cal lever action single shot rifle was made in 1976-then discontinued.
46 years
Is it a pistol or a pocket rifle? Either way, it would have been made between 1886 and 1916. You can find a fair amount of information about Stevens guns in Flayderman's Guide to Antique American Firearms or The Standard Catalog of Firearms. Flayderman's bibliography will reference other sources of more detailed information.
the Stevens model 16 sidelever was made from 1900 to 1913
Your savage/stevens model 86d was made between 1936-1943.
18 inch barrell 1863
It would have been made between 1886 and 1916. You can find a fair amount of information about Stevens guns in Flayderman's Guide to Antique American Firearms or The Standard Catalog of Firearms. Flayderman's bibliography will reference other sources of more detailed information.
The stevens model 84C was produced from 1936-1945 in the amount of 99,500 guns.
Only made from 1969-1972.
You can find them at ranges and American guns for sale On Semtemper10 To Nover 19th
50's or so