I purchased a 600pc lot of used roulette solids around two years ago from a fellow in Kentucky, and many of the chips bore those markings. I didn't notice them at first - someone on the forums did, and then eyebrows were raised all over the place. They felt like the real deal to me but those pips sure had me curious. I sent a sample chip to one of the folks at the CCA, and he concurred with my opinion - the chips were indeed made by Paulson. I then took the whole lot of them to ththe convention last year and put them in front of David Spragg, Eric Rosenblum, et. al., and everyone agreed. Paulson.
David suspected that the pips were basically just defects/imperfections in the mold itself and weren't caught in QA until after some chips had been produced on them and let into the wild. It's effectively its own mold variation, but one they'd rather not have in use (as evidenced by the fact that there aren't more of them out there). So far I've only seen those variations on solids.