Thank you for assisting with the Chinese translation.

What I did not tell you was that these chips are currently used at a Chinese owned casino in Harare, Zimbabwe - which is in Southern Africa.

I initially thought there were two options. Either those chips were initially issued and used elsewhere at a different casino (Macau or another Asian location), or the Chinese owner of the casino in Harare has some or other connection to the "real" Wynn casinos. Maybe he used to work or gamble there?

What I have seen in the past with another Chinese casino in Harare was that they used chips that had originally been manufactured for another casino, and they also used obsolete coins for their gambling machines.

I found the discussion around the currency also helpful. In this "Wynn" casino in Harare, the currency used is US Dollars. It makes sense in terms of value.