In 1999 I was contacted by a fellow in FL, B Howard, that had quite a few of the Zimba's chips. 4 different 50¢, $1, $5, and $25.
He told me he had them for years and had bought them thur mail order in a magazine. He was using them in a home poker game. He did not want to sell them, just info about them. He had gotten my name in an artice I wrote in a magazine.
He sent me one of each, they were almost UNC. He told me how many he bought but I have forgotten that.