First magistrate attested in Athens in 77/76 BC: See M. Thompson, The New Style Silver Coinage of Athens (1961) no. 1227 /
her issue 86 (p. 572); C. Habicht, Zu den Münzmagistraten der Silberprägung des Neuen Stils, Chiron 21, 1991, p. 8 (77/76
BC, his issue 88); Prosopographia Attica 9053; P. M. Fraser – E. Matthews, A Lexicon of Greek Personal Names II Attica (1994)
p. 281 s. v. Leukios, no. 7; W. Leschhorn, Lexikon der Aufschriften auf griechischen Münzen II (2009) p. 640 s. v. Leukios.