That is a heavily used
obv. die at
Odessos, appearing for example on no fewer than five coins in Blancon List 41, 2003. The
obv. legend is as Steve says, except in
exergue it's
AVT K MA.
AMNG 2353 lists your Nemesis-Aequitas
rev. type for Gord. III and Great God at Odessus, but with a variant
obv. legend. A specimen of this coin is illustrated in Dave Surber's
Mouchmov translation, under no. 1670, though it's a variant of the coin M. describes.
Varbanov 3563,
Bulgarian ed., however, lists and illustrates a coin from the same dies as yours, stating "Private coll. Unpublished."