This Belgian commemorative stamp was issued in 1979 to celebrate the 1000th anniversary of Brussels (979–1979). It depicts a richly detailed medieval procession featuring the crowned Madonna and Child, carried in ceremonial splendor by nobles in ornate robes and crowns. The design is inspired by historic Flemish art, reflecting the deep cultural and religious traditions of the region. The surcharge value (20f + 10f) indicates it was a semi-postal issue, with proceeds supporting a public cause. A striking piece for collectors interested in Belgian history, medieval art, and religious-themed philately.