Most eastern european casinos are 'divided in two', one part using local currency and the other US$.
Various historical reasons for this. In this case (Budapest) then prior to the Berlin Wall coming down, a non-resident was only allowed to purchase something like $60 (It was £36 when I went there) in local currency per day. Residents were probably not allowed to buy US $
Street traders would often try to exchange their daily takings for 'hard currency' on the black market at the days end, for fear of the local currency being worth 'squat' tomorrow. Similar throughout eastern europe and also Brazil, Argentina etc 10 to 20 years ago.

The chip you show is a 'real' design. I have, or have had, the genuine chip. I believe I supplied a couple of the ones Gary showed as well.