are old popular mechanics worth anything?
values issues as following: Popular Mechanics, 1910-1939, $4 to $8 each; 1940-1959, $3 to $6 each; and 1960 to the present, $1 to $3 each; and Popular Science Monthly issues dating 1910-1939, $8 to $12 each; 1940-1959, $4 to $8 each; and 1960 to the present, $1 to $3 each.