This 4.50 franc Belgian stamp issued in 1976 honors Cardinal Désiré-Joseph Mercier, one of Belgium’s most respected ecclesiastical figures and a symbol of moral resistance during World War I. Rendered in deep maroon tones, the stamp features a finely engraved portrait of Cardinal Mercier wearing his ornate mitre, designed with intricate floral patterns. The issue commemorates the 50th anniversary of his passing and reflects Belgium’s gratitude for his leadership, intellect, and patriotism. It’s a classic piece for collectors of religious or Belgian historical themes.