Signed book: Comeback 2.0. First edition, first printing. NY: Touchstone, 2009. Hardcover, 9.5 x 9.5. Signed on the first free end page in black felt tip. Signature was acquired at a public signing at Barnes and Noble, and is accompanied by information pertaining to the signing and two photos taken at time of signing. In fine condition. Pre-certified Steve Grad/PSA/DNA and RRAuction COA.