Issued in 1997, this Danish 4.00 kr stamp commemorates the 600th anniversary of the Kalmar Union (1397–1997), a historic Nordic alliance uniting Denmark, Norway, and Sweden under one monarch. The design depicts King Erik of Pomerania and Queen Margrete I, who played a central role in founding the union. The artwork, rendered by Keith Bassford, evokes the regal atmosphere of the late medieval court, highlighting Margrete’s influence as one of Scandinavia’s most powerful rulers. This issue honors a pivotal moment of Scandinavian unity and royal diplomacy.