Bulgarian National Bank, specimen 200 Leva, 1929, serial number A000000, Ivanov and Nachev signatures, with typed annotations in margins and ink annotations showing the locations of the secret letters hidden in the printing and used to detect forgeries, in PMG holder 45, choice extremely fine, unique in this format, secret letters clearly visible under magnification
BNB B156as, Pick 50s £500-£700

This lot was sold as part of a special collection, The Cook Collection of Central and Eastern European Banknotes.

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