10 Pfennig - Langenschwalbach

Langenschwalbach — now Bad Schwalbach in Hesse — issued iron Notgeld during the acute coin shortages of World War I, when the German Imperial government systematically withdrew copper and nickel coinage for war production. Municipal issues like this filled the vacuum left by hoarded Reichsmünzen, circulating purely on local trust. Iron was the most unglamorous of wartime substitutes, prone to rust and poorly suited to die work, which is why clean survivors are harder to find than the mintage figures alone would suggest.