I received one dozen of the Pro V1x version (package says exact model may vary). Looking at the balls, I cannot see any flaws. They look like regular PV1's just with the word practice stamped on them. The packaging was a little battered, but so long as the ball preforms, I will be pleased!
These are my favorite balls. Unlike the X-out, there is no chance of having a "bad" ball. These balls only have cosmetic issues. These are an absolute steal!