I've seen scans of nearly identical notes, both $5, $10 and $100 where the portrait or nearly the entire portrait is missing, but all other intaglio is present. The only true 100% ghost notes are the original $10s that Tom really likes.
I expect that these are legitimate errors, although I have yet to view one first-hand.
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BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
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