Fountain pen signature, “Yrs truly, Mark Twain,” on an off-white 3.75 x 1.75 slip, affixed to the bottom of a book photo of Clemens standing outside his old home in Hannibal, Missouri. A touch of light toning and some slight wrinkling from adhesive on reverse, otherwise fine condition. COA John Reznikoff/PSA/DNA and R&R COA.
