Well I did get a note or two last time around, that somoene had Red chips like this. The eBay seller said they were roulettes, but he didn't know where from. ( wonder about creative descriptions on eBay, so I discount the roulette theory for now.)

I don't know enough about the mold, and wonder if it has a specific period of production or is it still current?

Lower right of the variations, looks the most like Antiartica. After that, still clueless...