Gordian III and Tranquillina AE 28mm of Markianopolis, Moesia Inferior. 

AVT K M ANT GORDIANOC AVG CE TRANKULLEINA, laureate, draped 
and cuirassed bust of Gordian right, facing draped bust of 
Tranquillina left.

VP TERTVLLIANOV MARKIANOPOLITWN, Zeus, naked to waist, seated 
left, holding patera and sceptre; eagle at foot left. 

Varbanov 2061; AMNG 1172.
Used with permission of CNG (cngcoins.com), from a
2003 auction, added September, 2011