Three times attested as first magistrate in Athens, in 65/64 BC [Thompson issue 98], in 61/60 BC [Thompson issue 102], and
in 56/55 BC [Thompson issue 107]. From Kephisia. Son of Diokles. Eponymous Archon in Athens in 57/56 BC and priest of Asklepios
and Hygieia (his additional symbols Asklepios / Hygieia / Dionysos conform to this priestly office) (Thompson 1961, p. 560;
Habicht 1997, p. 16). His subsequent magistracies were explicitly mentioned in the legend by the addition of ΤΟ ΔΕΥ "for the
second time" and ΤΟ ΤΡΙ "for the third time": See M. Thompson, The New Style Silver Coinage of Athens (1961) nos. 1249-1250,
nos. 1259-1262, and nos. 1269-1270 / her issues 98, 102 and 107 (p. 560); C. Habicht, Zu den Münzmagistraten der Silberprägung
des Neuen Stils, Chiron 21, 1991, pp. 6 and 15-17 (65/64, 61/60 and 56/55 BC, his issues 100, 104 and 109); Prosopographia
Attica 4033; P. M. Fraser – E. Matthews, A Lexicon of Greek Personal Names II Attica (1994) p. 120 s. v. Diokles, no. 112;
W. Leschhorn, Lexikon der Aufschriften auf griechischen Münzen II (2009) p. 454 s. v. Diokles.