Second magistrate attested in Athens in 107/106 BC [issue 58]. Again attested as second magistrate in 105/104 BC [issue 60]:
See M. Thompson, The New Style Silver Coinage of Athens (1961) nos. 745, 747-758, 747-748 (drachm) and nos. 777-800 / issues
58 and 60, with commentary on p. 565; C. Habicht, Zu den Münzmagistraten der Silberprägung des Neuen Stils, Chiron 21, 1991,
p. 5 (107/106 and 105/104 BC); Prosopographia Attica 5708; P. M. Fraser – E. Matthews, A Lexicon of Greek Personal Names II
Attica (1994) p. 174 s. v. Eukles, no. 17 (listed under Athens in general, no specific deme); W. Leschhorn, Lexikon der Aufschriften
auf griechischen Münzen II (2009) p. 504 s. v. Eukles.