All of these chips include the denomination in US$. The term US$ is used in casinos where the US$ is not the local currency or in a U.S. casino where they have chips in more than one currency. For instance there are U.S. Tribal Reservation casinos near the Canadian border that have chips in both US$ and Canadian$. The Vegas Kewadin Casino in Sault Saint Marie, Michigan used both US$ and Canadian$ chips.

Link to Vegas Kewadin Casino in the ChipGuide: http://www.chipguide.com/cgi-bin/search/search.cgi?id=missvk

The Paradisus Casino in Puerto Rico does not have chips in multiple currencies, only U.S. dollars. As do all other Puerto Rican casinos. And the U.S. dollar is the local currency in Puerto Rico. And the chips used in the Puerto Rico casino look nothing like this $100 chip.

So this chip was most likely ordered for the Dominican Republic casino. I also believe the seller when he claims to have picked the $100 chip at the casino in Puerto Rico. Both casinos are owned and operated by the same company, Paradisus Resorts.

My guess is that either: 1) Additional $100 chips were needed in the Puerto Rico casino and the Dominican Republic casino had them to spare; or 2) Customers brought $100 chips from the Dominican Republic casino to the Puerto Rico casino, which were accepted by the casino and kept there. So I think that both are right and that the chip was used in the Dominican Republic casino and was also used in the Puerto Rico casino. The was a similar situation interchanged chips at the Golden Nuggett casinos in Atlantic City and Las Vegas.