Walt Disney's Comics and Stories #6 / 462

Donald Duck dons a trench coat and fedora to become Duckburg’s most reluctant private eye, taking on his first case: guarding a priceless hypnotic opal during a public ceremony for King Notraks of Toolong Sarong. With the Beagle Boys lurking and the mayor watching closely, Donald must prove he’s more than just a duck in a hat—especially when three bakers, a parade of police, and a king with a suspiciously shiny crown all seem to have motives.