I don't think I own any $100 or above chips that were purchased or won at face value. I did have some, but after I took a photo or used the digital camera, they went back to the casino.

At one Indian casino I bought in, played awhile, colored up and headed for the parking lot. There I took digital photos of the various chips, including the $100 and then returned them all to the cage.

In Elko I made a chip run, took everything back to the room, took photos and then made a reverse run to return them. The chip below was brought back and sold on the BB.

But the point of this, just like hunting for UV markings is, to leave the casino proper for the research work.