Four Queens is the king (sorry, bad pun intended) of issuing "special" chips for any & all occasions. That casino has come out with some of my favorite chips I have collected. I like the $2.50 chip you have from Four Queens. Hang on to it. Hard Rock Las Vegas is another casino that issues quite a few "special" chips. You're definitely in the right city for collecting casino checks. I have $1 chips/tokens from @400 casinos / card rooms. A while back OAP sent me a few chips he had collected over the years, which was very nice of him. I generally only collect chips in use since 2000. Occasionally I'll acquire a chip from a casino that was around when the riverboat casino era began (@1991), as many of the riverboats changed ownership / names after opening.