"New Style" issue, 114/3 BCE
Magistrates Diotimos, Magras, and other(s)?
AR tetradrachm, 16.7 gm
Obv: helmeted head of Athena right
Rev: owl standing right, head facing, on amphora; magistrates’ names in fields; A on amphora, ΠE below; all within wreath
Ref: Thompson 660 ff*
part of a large unimaged mixed lot, Stack's Bowers and Ponterio November 2013 Baltimore Auctions, Session A, lot 20100
* I am far from certain about the exact attribution and references. For some reason Athens owl tets, old and new, just haven't captured my fancy and so I haven't read much about them. Searching through references and catalogs to find a match for this coin was confusing at best but I did find one exact match which was deemed "Thompson 660 ff". The seller could be wrong, of course.