Bank Melli Iran, colour trial specimen 20 rials, ND (1954), red Farsi serial number, olive green (instead of brown), Farsi text, Darius the Great stabbing Ahriman monster from stone relief at Persepolis at left, Mohammad Reza Shah Pahlavi, reverse, English and Farsi text, Bank Melli Iran new headquarters building at centre, solid yellow security thread (Pick 65cts, TBB B155at), red overprint in PMG holder 64 EPQ Choice Uncirculated