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Message:: [QUOTE="gatzdon, post: 303124, member: 8247"]As far as I know, the wet intaglio printing has not been used since large notes were printed.  I would question the source if someone said the BEP tried switching back to the wet method in the 90's because it just does not work at the speeds and volume that hte BEP produces.  The wet intaglio printing method requires a drying time of 24 hours with spacers between EACH AND EVERY page. As I mentioned before, it takes in excess of 20 tons to transfer an image from the plate to the paper.  Ink just does not transfer from paper to paper without a significant amount of pressure.  When it does, it only leaves a ghostlike image, extremely faint, and only the parts of the design that are most raised and thickest. I don't know if I'm repeating myself, but OP's error occurred because a folded page was fed through the printing press.  Where the paper was missing, the ink was transferred to the impression cylinder.  Each subsequent page received an image from the impression cylinder (now a reversed image on the back side of the page), getting fainter with each page that passes through.  It's my understanding that it takes about 20 to 50 notes for the image to fade away (but I do recall seeing an auction in the 90's with almost 100 consecutive notes that someone got from an ATM, most of the notes at the tail end could barely show the offset).[/QUOTE]