Apparently, the backs of the hobby version cards and retail version cards are NOT the same, at least not for the last 100 cards in Series II.
Can you spot the differences? Notice the top of the card. For some, it's all white. On others, it fades from gray/silver to white. I believe the white tops correspond to cards pulled from hobby packs while the gray/silver tops are retail cards. I only bought one box of Upper Deck Series II hobby cards, so I have no idea if the same thing happened with the last 100 cards of the first set.
Are these differences on purpose? Does this mean the complete set has a parallel within the hobby? Does anyone care about the differences now that the 2009 cards are out?