Wow what an interesting looking book. I noticed that the Vincent Graves Greene Philatelic Foundation has it on sale at
http://www.greenefoundation.ca/publications.html I am thinking of getting a softcover copy of it sometime soon.
With regards to the inverted stamp, it appears that it can only appear on the Canadian stamp because it was printed using two different printing plates that were each colored in a different color separately. The one that had the inner design was printed using blue ink and the other one that had the outer design was printed using red ink. The two plates were then used to print the stamp in two stages so that somewhere the paper sheet got turned upside down before the second printing plate printed on the paper resulting in the inverted design. Unless I am mistaken by how the invert is shown in front of the book above, was the inner blue part printed before the outer red part so that the red part was the inverted part since a small part of the inverted red "D" of "CANADA" appears printed on top of the blue part?
With the U.S. printing with the Giori press, there was only one printing plate used, but the two different inks were applied to the plate in just the right places so that there could not be any inverted design on it.
Posted 07/05/2013 1:44 pm
