Canada 1954 PMG Choice Very Fine 35 10 Dollars (Back Proof)
Back proof in black of the 1954 10 Dollars. Unlisted and reportedly missing in this format from the Bank of Canada Museum collection (a search on their website reveals no such items). Obviously handled, we can imagine this example was used to approve the final design, although we can not confirm so. A fascinating piece of Canadian numismatic history and possibly unique. PMG mentions "Annotations".