The subject matter of this graduate thesis are coins that were found on the area of former ancient Pannonia. During the field research conducted by the Department of Archeology at the Croatian Academy of Sciences and Arts, 41 pieces of ancient coinage were found on two localities (Ivandvor and Queen Katarina Kosača Park). The coins were entrusted to the Split Academy of Fine Arts in the year 2015 so as to be subjected to conservation-restoration treatment. The graduate thesis is divided into historical and expert section with the aim of clarifying the overall significance of these coins. Definition of money and the theme on primary trade in terms of barter is followed by a brief description of historical development of diverse metals which were used for manufacturing everyday items. The latter section demonstrates the way in which coins were spread as well as adapted to the cultures of the world. What follows are development stages in monetary system of ancient Rome. The section ends with identification of discovered coins. Fundamental characteristics of techniques used by roman blacksmiths serves as an introduction into the section on conservation and restoration of the coinage. This last section is divided into several chapters that describe the existing condition, removal of indication of decay, and also stabilization and consolidation of coins. In conclusion, proposal for storage and public display is added. Appendix containing photographs of coins in existing condition and those after conservation-restoration treatment is included.