Need a lot more information from you before I can give you much of an answer. J. Stevens started making firearms in 1865 (or was it 68 - I'm away from my references right now) until 1915. Then the name was brought back in 1920 as a division of Savage and retired in 1991. And in 1997 it was revived again. So a Stevens .22 could be brand new or 140 years old.
46 years
The Stevens model 89,22cal lever action single shot rifle was made in 1976-then discontinued.
18 inch barrell 1863
the Stevens model 16 sidelever was made from 1900 to 1913
stevens arms co favoite 22 long rifle
Your savage/stevens model 86d was made between 1936-1943.
Value of a 1907 Stevens Jr 22 calibar rifle
What is the value of a Stevens Arms 22-Long Rifle Pat. 1913.
The stevens model 84C was produced from 1936-1945 in the amount of 99,500 guns.
More information needed.
50's or so
Stevens.