We have the largest inventory of Leaf Cut Signature 1/1 certified autograph cards of summer and winter Olympic greats you'll find anywhere including Jesse Owens, Katarina Witt and Kristi Yamaguchi. Leaf Cut Signature Masterpiece 1/1 cards are among the coolest certified autograph cards ever made. Each autograph is certified by BAS, JSA, or PSA/DNA and made by Leaf into a one of a kind card, slabbed and labeled.