Post card has been postally used and bears an Apr 24 1957 postmark from Philadelphia. Signed on back in blue ink without inscription. We guarantee all uncertified autographs to pass 3rd party authentication with CAS our authenticator of choice. If you want to get autographs certified you need to notify us before you pay. We submit them for you. If an autograph doesn't pass we refund both the purchase price AND the authentication fee.