The 9 Den coin refers to a type of French coin that was minted during the French colonial period in North America. Specifically, the Rouen mint produced coins like the 1721 Denier, which were used in trade within the French New World territories. These coins typically feature intricate designs emblematic of the era and serve as important artifacts for collectors interested in colonial history and numismatics. The significance of such coins lies in their historical context, rarity, and connection to the economic activities of the time in the Americas.

Item Denomination Series Year Mint
1721-B 9 Den BN 9 Den French New World 1721 Rouen