... production of this type manufacture, similar type chips were used in Eastern Europe; Casino Bled (Slovenia) being one. I know this because I imported these type checks and Roulette chips directly from the casino.

I also asked John K. while at a trade show if he knew who the manufacturer was and I recall him saying that he knows of the Bled chip... and that being the only similar manufacture.

I've since sold all my examples, but a reference to this chip can be found in one of Howdy's (mid-1990s) sales.

If I were pinned up against a wall and asked who made the Harrah's chip in question, I would say the same manufacturer who made the Bled Roulettes... whomever they are.

Sorry, if none of this helps... but it's all know.