Issued by Belgium in 1974, this semi-postal stamp commemorates Armand Jamar (1870–1946), a noted Belgian medical figure remembered for his humanitarian and public health contributions. The denomination 4F + 2F indicates a charity surcharge, commonly used to support social or medical causes. The finely engraved portrait style reflects Belgium’s strong tradition of classic portrait stamp design during the 1970s. Semi-postal issues like this are valued by collectors specializing in medical personalities, Red Cross themes, or European welfare stamps. A desirable addition for thematic and Belgian national collections.