Al Worden’s lot of six medallions and ‘challenge coins,’ each 1.75″ or 2″ in diameter, with embossed color designs and text to both sides, including: a Defense Technology Security Administration coin; a medallion related to the Atlantic City hangar of “Ye Anciente and Secret Order of Quiet Birdmen”; a “Leadership Conference” medallion from the FBI Houston Citizens Academy Alumni Association; a Seal Beach Police Department coin; a Marvin Test Solutions medallion; and an Operator Performance Laboratory medallion for “Fixed and Rotary Wing, Human Factors Research.” In overall fine condition.