The copper coinage of 1721 and 1722 was authorized by an edict of King Louis XV dated June 1721. The coins were struck on copper blanks imported from Sweden. Rouen and La Rochelle struck pieces of nine deniers in 1721 and 1722. New France received 534,000 pieces, mostly from the mint of La Rochelle, but only 8,180 were successfully put into circulation, as the colonists disliked copper. In 1726 the rest of the issue was sent back to France.