Jerry Birl traded me some Paul-son autosort roulette samples recently and as I looked at them closely along with some I had in the collection I see there are really three varieties. The scan below shows the differences.

There are large and small center inlays, and on the large inlays, a difference in the sequence the sales locations appear around the inlay. Notice that all these are plain-mold and have a recessed center. I'm not sure if that's for better handling by the dealer or by the machine that sorts them.

I have a few extras of the colors and styles shown I'd like to trade for other samples, slot club cards, cash, or something. Most of these appear to have some use, and I'm guessing its from testing in the sorter.