sentences:  This tradition was first established in Barks' "The Menehune Mystery" (Uncle Scrooge #4, December 1953), while the Beagle Boys in previous stories, and some of them in "The Menehune Mystery," instead had their prison numbers as "176-" followed by random digits (except in their first story, where they have no prison numbers).However, in a few of his later stories Barks didn't continue this tradition and used random numbers again instead, but subsequent writers and artists by default still mostly uses the 1, 6 and 7 combinations for the Beagle Boys in the modern comic books.The Beagle Boys also have their prison numbers tattooed on their chests.