Athens, AE semi-autonomous issue, AD 150–175. 

Helmeted head of Athena right.
AQHNA-IWN, Athena standing right, looking back, holding 
owl on right hand, outstretched behind her, and shield 
and spear on left arm.

Kroll Agora 312; SNG Munich 349–351; Svoronos pl. 85, 29-30.

Image from the Rozanov Collection, Pushkin Collection.