No serial number given = no answer.
1954.
K130218 was produced in 1951
1955
and the model is..................................
.22 cal
Around 1955.
1961-1962
Go to proofhouse.com and take your pick.
1977
Standard Catalog of Smith and Wesson, 3rd ed. Bring it in to a professional. S
Model number will be inside the crane area when you open the cylinder.
1977