The chips at the diamond Casino in Philipsburg, St. Marrten had images of Art Nouveau style women, that looked very familiar but, I could not recall where I had seen them. I was at a friends house and he had some very nice turn of the century posters that had the same look. He said the artist was Alfons Mucha. I googled him up and Presto Matcho! Images on two of the chips are the same. Possibly the $2.50 and $25 chips are his art as well.