Third magistrate attested in Athens in 131/130 BC. The added monogram could be read as ΚΗ... which might be an abbreviated
patronymic or demotic: See M. Thompson, The New Style Silver Coinage of Athens (1961) nos. 396-397 / issue 34, commentary
on p. 577; C. Habicht, Zu den Münzmagistraten der Silberprägung des Neuen Stils, Chiron 21, 1991, p. 5 (131/130 BC); Prosopographia
Attica 11123; P. M. Fraser – E. Matthews, A Lexicon of Greek Personal Names II Attica (1994) p. 341 s. v. Nikon, no. 19; W.
Leschhorn, Lexikon der Aufschriften auf griechischen Münzen II (2009) p. 716 s. v. Nikon.