This is Croatia's 50,000 dinars, because since the drastic changes in Eastern Europe, Croatia's economy has seriously declined and its currency has seriously depreciated. The new price of this 50,000 dinar note in China is around 4 yuan. Croatian mathematician, astronomer and physicist Ruder Bo?kovic (1711-1787). The background pattern on the upper right is Boskovich's main work-geometric calculation chart? Back of the coin: The sculpture in front of the Law School Building of the University of Zagreb, Croatia-the mother of Croatia-was carved by the Croatian sculptor Ivan Mestrovic (1883- 1962). The patterns in the background are the architectural elements of this building-doors, windows, etc.