Regular characters: Biffo the Bear, The Three Bears, Grandpa, Minnie the Minx, Lord Snooty, Billy the Cat and Katie, Bash Street Kinds, Pup Parade, Billy Whizz, Rodger the Dodger, The Belles of St. Lemons, The McTickles, The Nibblers, Little Plum, Dennis the Menace.
No April Fool or Fireworks issue in this year. Or free gifts for that matter.
#1537 the New Year issue but no mention on the cover. #1550 Easter issue. #1572 advertises the Beano Book 1973 on the cover. #1581 Billy the Cat makes a cover appearance. #1585 advertises the Beano Book 1973 again on the cover. #1588 Christmas 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.