Croatia now uses the Kuna , the Dinar went out of circulation in 1994. I'm pretty sure that your Dinar is no longer worth anything, except maybe to a collector. Are you just wanting to know what it was once worth? Inflation was huge before they got rid of it, so probably all those 0s amounted to not much at all.
the dinar dropped ridiculously in the 80s and im sure even wrose before the last war. I remember that lets say 200 dinars would be worth like a 100 the next year. The dinar deflated ridiculously. I doubt its worth anything now. 50,000 wouldnt have been much even in the 80s if i remeber correctly but it would be impossible to give you an answer. It depends what year you are inquiring about. crazy eh? now if you had KUNA from wwII, would those be worth anything? that would be sweet as they sell high value notes on ebay. i doubt they would pass though. technology and the image have changed too much. wishfull thinking though.!
As I understand it, the dinar was renamed kuna during the early Tudjman years, the name has connotations of an earlier independent Croatia and was done for reasons other than just financial. Hence dinar money is not a desirable possession and is probably worthless to anyone other than a serious collector, even then, probably not.
After we happily divorced Yugoslavia, we had a temporary currency called Croatian Dinar for a while (couple of years or so). Ex Yugoslav currency was also called dinar, but Croatian dinar was already used after declaring our independance and has nothing to do with ex Yu one. The official currency today is Croatian kuna (HRK) and I cannot tell the value of Cro Dinar today, if there is any...