Bank Melli Iran, obverse die proof for 5 Rials, 1935 (1932), black printing, Hajier and Khosravi signatures, with typed annotations in margin and ink annotations showing the locations of the secret letters hidden in the printing and used to detect forgeries, in PMG holder 66 EPQ, gem uncirculated, unique in this format, secret letters clearly visible under magnification
BNB B107ap, Pick 24p £600-£800

This lot was sold as part of a special collection, The Mount Damavand Collection of Persian Banknotes.

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Note that reverse proofs were not required for this issue since they were identical to the previous issue.