#807 New Year issue. #817 1st Jonah by Ken Reid. #840 originally had a 4 page insert for a free gift issue of The Wizard. #850 Fireworks issue. #858 Xmas 1958.
While special issues like New Year, April Fool and Fireworks fetch 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.