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By The Letter Rookie Signatures is an insert set in 2009 SP Authentic. Each rookie player is featured on a string of letter cards, some strings spell the player’s name while others spelling “ROOKIE” or “SP AUTHENTIC”. 30 players were included in the set including David Price (twice), Matt Wieters and Pablo Sandoval . Each card is a manufactured letter with the players signature and each is serial numbered between 11-100 copies. The overall letter autograph insert rate was 1:12 hobby (that includes the veteran signature letter cards as well).


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Template:2009 SP Authentic