World War II imposed materials restrictions on manufacturing, so siome radio premiums were made of cloth or psper. This was the 1943 Shoulder Patch. By 1942, the winged-clockface logo was the symbol of the Secret Squadron, and the patch was used in lieu of a new Code-O-Graph. The pastch weas also offered for the 1944 season. The paperwork indicated that the patch could be sewn onto the shoulder of a shirt, or placed on the left side of a shirt, where pilot wings were ordinarily placed by aviators.