ATTICA, Athens. Circa 264-267 AD. Æ Drachm (6.92 gm). Draped bust of
  Athena right, wearing crested Corinthian helmet / AQHN-A-I-WN, Athena
  standing facing, head left, holding spear in right hand, shield on
  left arm. 

Kroll 318; Svoronos pl. 86, 7 (same obverse die); SNG
Cop 391-392; BMC 676-678; Imhoof Pausanias, pl. Z, Athens II, i-ii. 

Triton V Sale, 15 Jan 2002, lot 364.
 Lot sold for USD 150.

by permission of Classical Numismatic Group, www.cngcoins.com.