I had written the ebay seller in March. I am buying some chips and will make them available on this board at cost. Picture below. Thwe dealer says they were made in Taiwan and are open stock so they can't be used in casinos. This is what he says (all of it does not seem correct):
"The chips are massed produced in Taiwan. Casinos don't use them because of that
and because they have no security features, all have the same inlay colors and
anyone can buy them and try to pass them off as real, IF a casino were to use them.'