Third magistrate attested in Athens in 112/111 BC [issue 53]. Again attested as third magistrate in 109/108 BC [issue 56].
Maybe Archon of the same year 109/108 BC (H. B. Matttingly, NC 157, 1997, p. 259): See M. Thompson, The New Style Silver Coinage
of Athens (1961) nos. 699-690 and nos. 721, 727-728 / issues 53 and 56 (p. 569); C. Habicht, Zu den Münzmagistraten der Silberprägung
des Neuen Stils, Chiron 21, 1991, p. 5 (112/111 and 109/108 BC); Prosopographia Attica 7425; P. M. Fraser – E. Matthews, A
Lexicon of Greek Personal Names II Attica (1994) p. 231 s. v. Iason, no. 11; W. Leschhorn, Lexikon der Aufschriften auf griechischen
Münzen II (2009) p. 561 s. v. Iason.