Here is the scan of the reverses of the Tournament chips. Note that several have blank reverses, and that a few are different obverse/reverse. It's also interesting that there's one with the Matsui "M" mold (third Riverside black chip). I don't think I've seen another chip using this. The first two Riverside blacks are Dragon mold, while the fourth is H&C.

If anyone needs clarification of mold or color, let me know.