The dice are so hard to date. Sometimes the casino's logo evolve over time - like Harrah's going from "Harrah's Club" to "Harrah's" to changing the apostrophe to a star. The only other indicator might be size. The smaller ones tend to be older but it isn't an absolute indicator. I knew the Railroad Pass was an old club so I thought the dice might be pretty old since they were the smaller 5/8" size. Perhaps they were just abused - oh well, I'll give them a good home and some tender loving care to make up for it. The only other thing I have from the Railroad Pass is this Money Clip....