Issued in 1977, this Belgian semi-postal stamp honors Albert Émile Janssen (1883–1966), a prominent economist and politician who served as Minister of Finance and played a vital role in the National Bank of Belgium. The design, rendered in fine engraving, features Janssen’s dignified profile with an ornate banknote design backdrop inscribed “Nationale Bank van België.” The denomination reads 5F + 2.50F, where the surcharge supported social causes. A classic example of Belgium’s tradition of depicting national figures who shaped the country’s financial and economic history.