1 Penning - Harthacnut Short cross type, bust right

Harthacnut ruled Denmark and England simultaneously — one of the very few medieval rulers to manage two kingdoms across the North Sea — yet his reign was administratively chaotic on both sides. His Danish coinage borrowed heavily from contemporary Anglo-Saxon penny types, a direct consequence of the monetary influence England exerted over Scandinavian minting practices throughout the eleventh century. Danish moneyers were actively copying English dies during this period, and distinguishing indigenous production from imitation is still a matter of specialist debate.

Hauberg's classification remains the foundational reference, though it predates modern die-study methodology by over a century.