Issued by the Deutsche Bundespost in 1981, this 90 Pfennig stamp symbolizes global unity and mutual support in development efforts. The design features four interlocked hands of different skin tones, forming a square to represent cooperation among nations and races. The imagery powerfully conveys the theme of solidarity, equality, and partnership—core principles of international development. The word “Entwicklungszusammenarbeit” (Development Cooperation) appears vertically on the left, highlighting West Germany’s commitment to global aid and collaboration during the 1980s.