Ed Charles signed his 1963 and 1964 Topps as well as a Ron Lewis 1969 Mets postcard. I've had these postcards laying around a while and my son sent out quite a few several years ago. I'm not sure why I haven't sent out more.
Bob Skinner signed his 1963 and 1964 Topps, as well as the 1963 Topps Buc Blasters card. Even in this shape, I had to pay nearly $10 for this card because Clemente is on it.