This article from Der Krieg provides an overview of German and Austro-Hungarian prison camp money (Lagergeld). Prison camp authorities issued script for Allied prisoners of war to make purchases inside prison camps. These authorities wanted to reduce the amount of money POW's used to reduce any opportunities of bribery of guards or to support escape attempts. Examples of script on this page are from Oberhofen (one Pfennig) in Germany and Chemnitz (ten Pfennige) in Saxony.
Germany, Austria-Hungary, Finances, Script, Chemnitz, Oberhofen, World War 1914-1918