Simon & Garfunkel - Guitar Signed co-signed by Art Garfunkel, Paul Simon Makes a memorable one-of-a-kind gift or unique centerpiece for your home or office! Use the Amazon "Make an Offer" option and get a quick response today! UACC registered dealer #RD110 and long-standing member of the Manuscript Society - In business since 1981. We offer authentic autographs & manuscripts and every purchase is backed by a certificate of authenticity - Buy with confidence! We are here to answer any questions you may have regarding this or any other piece. We have an outstanding reputation for the thoroughness of our research, for our business integrity and for our service to our clients.