This thread inspired me to re-read Operation Bullpen and something just struck me. In the photos section there is a Marino signed "Five Presidents" photo. This is the pose taken at the Nixon Library of the 5 living presidents at the time (Nixon through Bush 41)
However, the signature over George HW Bush 41 is the signature of George W Bush (the future 43)!!!
The book mentions Greg Marino assembled a "black book" of exemplars. Obviously he was using the wrong Bush template.