Gordian III and Tranquillina, AE26 of Odessos, Thrace.

AVT K M ANT GORDIANOC AVG CE TRANKVLLEIN, confronted
busts of Gordian and Tranquillina.
ODECCEITWN, Athena standing left, holding owl and 
spear; shield at feet, E in left field. 

Moushmov 1683; Weber 2667; Varbanov 4559.  

courtesy of Asta Tintinna Numismatica and deamoneta.com, Feb, 2012