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I have a few cards from the 2011-12 SP authentic set, one of which is #29 MarShon Brooks. Yet on the price guide it doesn't designate this card as a RC. Can anyone explain why a Brooks card released in 2012-13 (hoops and prestige) get the RC tag and a card released the year before is not?

Thanks for the help!

As for the year, it's because of the lockout, they decided to bundle up both rookie classes into one for the 2012-13 season. But also, some Upper Deck products have official RCs and some don't, since they aren't in their pro uniforms.