Gordian III and Tranquillina, AE 4 Assaria of Tomis, Thrace. 28mm, 12.24 g. AD 238-244. 

AVT K M ANTWNIOC GORDIANOC CABINIA TRANKVLINA, laureate, draped bust 
of Gordian right facing draped bust of Tranquillina left.
MHTRO PONTOY TOMEWC, Athena standing left, holding spear and
resting right hand on shield.
Delta in left field

Moushmov 2268; AMNG 3523; Varbanov 5680-5681 var.

With permission of Solidus Numismatik, July 2015.