I would be interested in seeing a start to end date list for all of these. For example, the brass chips were in use at Harrahs Reno and Tahoe the first time I went there, in Sept 1978, and looked worn even then. If I’m not mistaken, they were still in use well into the 1990’s. I believe some of the high denominations are still in use at the Hyatt. When I was last in Buenos Aires only a couple of years ago, brass chips I believe to be original Reliables were being used on the tables in one casino.