Jožef Prelesnik (1832-1898) was the best known money counterfeiter who operated on Slovenian territory in the second half of the 19th century. The article presents counterfeiters in the first decades of the 20th century in Styria: Franc Rupnik (b. 1869) and several members of the Potočnik family from Rošnja near Št. Janž in Dravsko polje. In 1891, Jože and Gašper Potočnik, who helped the counterfeiter Jurij Hvalec, were sentenced for counterfeiting money before the Celje jury court. In 1909, the Maribor jury court tried Gašper Potočnik’s sons: Franc Potočnik (b. 1880), a tailor from Rošnja, Gašper Potočnik jr. (b. 1888) and Jurij Potočnik (1884-1927). Jurij was sentenced to a further 20 years of heavy imprisonment in 1926. The former soldier and photographer Franc Rupnik was the main money counterfeiter in this group. He was sentenced in 1927, 1931 and 1937. The operations of the counterfeiters can be reconstructed on the basis of documents from the Regional Archives in Maribor.