THIS ORIGINAL COVER IS DIFFERENT THAN THE U. COMIC EDITION FOR ADVENTURE COMICS 156. PRINTED AT 10% THE PRODUCTION RUN OF U. INVESTMENT QUALITY TO ADD TO YOUR US COMIC COLLECTION WITH YOUR HIGH END BATMAN AND SUPERMAN COMICS. PERSONALLY I CANT STAND CGC AS THEY HAVE NO CLUE HOW TO GRADE FOREIGN COMICS. THIS COMIC SHOULD HAVE GRADED AT THE LEAST 6.5 OR BETTER. THEY DO NOT TAKE INTO CONSIDERATION THE PRODUCTION QUANTITY, BACK IN 1950S AND THE COUNTRY MAY HAVE BEEN 3RD WORLD. NO COMIC BOOK PRESERATION IN FOREIGN COUNTRIES. DIFFERENT QAULITY OF THE PAPER AND INK NOT LIKE THE US. THIS IS A GOLDEN AGE VERY TOUGH COMIC BOOK TO FIND IN HIGH GRADE AS IT HAS CLEAN WHITE PAGES, NICE COLOR, COUPON THE BACK COVER STILL INTACT. LAYS COMPLETELY FLAT AND HAS LITTLE SIGNS OF SPINE WEAR.