Every set of these (and the BCC versions) that I've ever seen (or bought, or sold) have had really screwy denomination breakdowns. Always odd quantities of chips, and never any kind of logic that made sense of the collection of chips. It's almost unique to these particular sets, and bizarre how it seems to be common to every one.
Have always wondered how they were sold initially,, what people were buying these for, or what they ended up doing with them (if the numbers reflect lost chips)?