Egypt. Alexandria. Nero, 54-68. Dichalkon (Bronze, 11.60 mm, 1.42 g) Dated RY 6 (= 59-60) Laureate head of Nero right, L to left, ζ to right (date). Rev. Large I within wreath. Vogt I, pp. 28-30. Vogt II, - . BMC 189. Dattari 283 (+ plate XXVII). Geissen - . RPC I 5262. Emmett 169. Christiansen, Erik, The Roman Coins of Alexandria, Aarhus 1988, Vol. I, p. 80. K&G 14.64. Very Fine. Ex Kerry K. Wetterström collection. Ex CNA, IV, 21.09.1988, lot 259. Ex CNA XII, 26.09.1990, lot 15. A coin of great rarity and curiosity, first because of the date of issue, finally deciphered in year 6 of Nero's reign (59/60 AD), then because it still leaves open the enigma of the meaning of the symbol I on the reverse, which cannot be the year 10 of the sovereign; it probably indicates the value of an assarion, a monetary unit common in the eastern provinces of the empire.