Issued in 1980 by the Deutsche Bundespost, this 100 Pfennig commemorative stamp celebrates the 25th anniversary of the Federal Republic of Germany’s membership in NATO (1955–1980). The design features the German tricolor flag alongside the NATO emblem and a series of stylized flags of other member nations, symbolizing unity and collective defense. It reflects West Germany’s integration into the Western alliance during the Cold War and its renewed role in international security cooperation. A striking modern design emblematic of peace and partnership in a divided Europe.