Issued by Belgium in 1967, this semi-postal stamp commemorates the Kongolo Memorial at Gentinnes, honoring missionaries who lost their lives during the Congo crisis of the early 1960s. The design features a powerful kneeling sculptural figure symbolizing mourning and sacrifice, set before the memorial structure. The 5 Franc + 2 Franc surcharge supported charitable causes, typical of Belgian social welfare issues of the period. Its somber artistic composition makes it an important thematic item for collectors of religion, humanitarian history, and post-colonial remembrance. A notable Cold War–era memorial issue within Belgian commemoratives.