Aluminum, paint, lacquer, 43.1 x 21.4 mm. The reverse shows raised stylized letters ЛЭ ("LE"), the late-Soviet era logo of the Lenemalyer Factory in Leningrad. In excellent condition.

Despite its relatively humble appearance, this is definitely an official badge, not a souvenir. Commemorative badges of this type were awarded to various low-ranking employees within KGB and its many axillaries - as opposed to the higher-ranking badges in brass awarded exclusively to active-duty KGB officers. Some of the aluminum badges were probably also given to KGB retirees.

Please note, the penny in our photo is for size reference.