5 Pfennig - Düren

Düren issued this iron notgeld piece in 1917 as the German war economy stripped copper and nickel from municipal circulation, leaving cities to fend for themselves with whatever base metals remained available. Iron was the default solution for dozens of Westphalian and Rhineland municipalities that year, though iron coinage corroded quickly in pocket wear — meaning most surviving examples show surface rust or pitting rather than honest mechanical wear.