This commemorative stamp honors the historic Brazilian expedition (1822–1828) led by the renowned explorer and scientist Georg Heinrich von Langsdorff. The design features his portrait alongside an illustrated route map of the expedition across Brazil, combined with a vivid scene of explorers traveling through the wilderness. Issued during the early years of the Russian Federation, the stamp reflects Russia’s tradition of recognizing scientific exploration and international research achievements. Its detailed cartographic artwork and historical theme make it especially attractive for collectors focusing on exploration, geography, or Russian transitional-period issues.