This is intriguing! The last page and the order ticket on page 2 make it clear that this is a Canadian publication, but the cover price, the advertisement on page 2, and the advertisements on the penultimate and last pages all refer to shillings and pence. I'm puzzled.
Actually, this is a UK issue, printed and distributed by a Canadian publisher to its UK distributor. Unfortunately, the indicia was erroneously left off the bottom of the inside front cover. Otherwise you would be able to read that it was printed in Canada for distribution in The UK by Streamlined Books, Ltd, whereas Canadian copies were published by Century Publishing Co. and distributed in Canada by Superior Comics, Ltd. The only difference between issues in the two countries was the price printed on their front covers. That was also true for all Canadian issues of the other Spotlight Publishing US titles( Latest, Three Ring, Pop-Pop, Jeep, Bee 29, Bombardier, Teen Town, Red Circle, etc.)