Samuel Clements, MarkTwain autograph

great signature on white/yellowed paper: Yrs truly Samuel Clements Mark Twain. Samuel Langhorne Clements (Nov. 30, 1835 - April 21, 1910), known by his pen name Mark Twain, was an American writer, humorist, publisher and lecturer. He was lauded as the  "greatest humorist the United States has produced," and William Faulkner called him "the father of American literature". The autograph is double matted to 11x14 with a great photo of the authore, framed and ready to hang. It comes with a Certicate of Authenticity from a board certified and court approved forensic handwriting and document examiner that was employed buy the secret service for years examining questioned documents. It is guaranteed for life.