Gordian III & Tranquillina AE 26mm. of Anchialus, Thrace. 

AVT K M ANT GORDIANOC AVG CEB-TRANKVL-LEINA, laureate, 
draped bust of Gordian III right facing draped bust of
Tranquillina.
OVLPIANWN AGXIALEWN, Athena seated left, holding small 
Nike and spear, shield leaning against throne.

Moushmov 2957; Varbanov 677.