Issued by the German Democratic Republic (East Germany) in 1966, this 20 Pfennig stamp commemorates the 10th anniversary of the FDJ Initiative "Mach mit, mach’s besser, mach’s mit uns" (MMM), a youth movement led by the Freie Deutsche Jugend (FDJ). The design features stylized portraits of a young man and woman, symbolizing socialist youth collaboration and industrious spirit. The FDJ emblem appears in gold at the top right, reinforcing the theme of collective progress. This issue highlights East Germany’s emphasis on youth participation in socialist development projects.