Jim,
One thing the ebay seller thirdgenaz didn't tell you was what he told me in our infamous phone conversation. He will probably deny it but he said that his source was an antiques dealer who would sell them in small increments of 5 chips each. I believe you have found his source. He reads these posts so he will see what I am saying but I would race him to see who gets back to this antiques dealer first. Did you ask the antiques dealer if he had more?