Casinos supporting Serbian Dinar Currency
The Serbian dinar, unlike many currencies from that region, has roots going back to the medieval period. This is largely because it was a silver-based currency and Serbia was one of the chief suppliers of silver in the area. The form of it changed over time, mostly replicating the appearance of the Venetian grosso but with the word "Dux" ("Duke") replaced by "Rex" ("King") on the inscription.
Other countries were very wary of relying too much on Serbian silver, but had little choice at the time. In fact, in the Divine Comedy it's possible to find the King of Serbia in hell, condemned for being a forger.
The first modern dinar was first minted in the mid-1800s after Serbia was freed from Ottoman rule. It originally traded on par with the French franc and lasted until 1920 when it was replaced by the Yugoslav dinar. This remained in place until 2003 when Yugoslavia was split into the State Union of Serbia and Montenegro. The Yugoslav dinar was traded at par for a new Serbian dinar that has been in use ever since.
All Serbian coins have identical inscriptions in Latin and Cyrillic writing due to both being in equal use throughout the country.