Thanks for the clarification, David.

Would TCR authors consider printing a similar explanation when numbers change or new ones are issued in the future for old chips? If there's not room in the end-pages, maybe post it somewhere (like here?) when it occurs.

I know there are chips in The Chip Guide that still reference TCR numbers that no longer exist. The Club Cal Neva in my first post is an example. The $5 is listed only as N4984. I think Charles would like to keep TCG as current as possible with TCR number references.