Issued in 1975, this striking 4.50 franc Belgian stamp commemorates the 30th anniversary of the liberation of the Nazi concentration camps (1945–1975). The design features the stark letters “KG” (Kriegsgefangener – German for “Prisoner of War”) crossed with barbed wire, and a red inverted triangle marked “B”, symbolizing Belgian prisoners in the camps. The somber color palette and minimalist design evoke the suffering and resilience of those who endured imprisonment during World War II. It stands as a poignant memorial to Belgian victims of Nazi persecution and a reminder of the enduring fight for human dignity.