Magistrate attested in Apollonia Pontica in 425-339 BC. See F. M. Fraser / E. Matthews, A Lexicon of Greek Personal Names.
Vol. IV Macedonia. Thrace. Northern Regions of the Black Sea (2005), p. 235 s.v. ΠΟΛΥΑΝΑΞ 5/4 c. BC; W. Leschhorn, Lexikon
der Aufschriften auf griechischen Münzen II (2009) p. 763 s. v. ΠΟΛΥΑΝΑΞ, 400-350 BC.; LGPN 4 p. 283 s.v. ΠΟΛΥΑΝΑΞ 5/4 c.
BC; E. Paunov, The tetradrachm coinage of Apollonia Pontica: Iconography, issues and magistrates, in: D. Boteva (ed.), Ex
Nummis Lux: Studies in Honour of Dimitar Draganov (2017), 59-87, p. 68 n. 26, p. 78 issue 36 (ΠΟΛΥΑΝΑΞ).