Hamm's municipal copper coinage of this period was issued under the city's rights as a member of the County of Mark, which had passed to Brandenburg-Prussia in 1666. The long date range reflects not continuous minting but periodic reissues as civic need demanded small change — gaps of years between strikes were common for pfennig-denomination municipal issues in Westphalia.
Hamm's municipal copper coinage of this period was issued under the city's rights as a member of the County of Mark, which had passed to Brandenburg-Prussia in 1666. The long date range reflects not continuous minting but periodic reissues as civic need demanded small change — gaps of years between strikes were common for pfennig-denomination municipal issues in Westphalia.