Here are some things for you bullion watchers to look for. These are the gold centers from $100 casino tokens, one from A/C and one from Las Vegas. Different fineness on the two, and different mints: one Jani Mint and one Green Duck Corp. Weight of each is about .36 Troy Ounce, which means melt value is in the $200-300 area, so they are worth watching for. The outer ring is silver which adds a bit of value but should to be separated from the gold if they are to be melted.

Here is a scan of similar tokens with the silver ring in place. Watch out though; I suspect the 500 is counterfeit as the markings of fineness don't make sense. The other one appears to have a .99 gold center!