There are really very few chips with inserts that don't have two or more groups of edge inserts . I used to have a scan of those I know of, but can't find it now. This Harolds Club, Reno NCV is one of them. It has only one group, which contains only one insert. I believe there were two or three more Nevada chips in this category.

There's another category of chips that have more than one group of inserts, but the colors are not repeated the same way in each group. There is an older Showboat $1 in that category; it has a single odd green in one group. Of course, there are error chips that exist just because they lack the intended repeated colors in all the groups.