2006-07 UD SP Game Used Wayne Gretzky Letter Marks'Z' Autograph Super Rare

  
2006-07 Upper Deck SP Game Used Wayne Gretzky Autographed Letter Marks, Letter'Z'. The cards are autographed in silver sharpie and numbered out of 50, but it's not 50 of each letter, it's 50 total letters, so with 7 letters in'Gretzky', there can only be 7 of each letter (with one letter numbered to 8), considerably harder to find than the Chronology letters. These cards are extremely hard to find and after 15 years I've decided to go in a different direction and offer them to someone trying to complete the nameplate.