#1678 1st Dennis the Menace on cover. #1692 Xmas issue.
While special issues like New Year, April Fool and Fireworks fetch a little more than a 'regular' issue, the Christmas issue always commands much more - twice and on occasion for high grade copies, three times the value of a 'regular' issue.
#1659 dated May 11th should be numbered issue #1160 so a slight misprint/miscalculation there! Fire that Assistant Editor!