BACKGROUND: The International Aeronautical Federation, a pre-WWII organization, awarded a series of proficiency badges to glider pilots on their successful completion of the appropriate tests and gliding trials. The "B" class certificate was awarded for the completion of a one minute solo flight with an "S" turn maneuver.

PHYSICAL DESCRIPTION: A 22mm diameter alloy lapel pin, to whose obverse are two "gulls," in white enamel, against a blue enamel background. To the reverse is a raised alloy button-tab. Although these usually bore an individual serial number to their reverses, this particular example is unmarked.