Akragas (Agrigentum), Sicily, AR tetradrachm, period of 
transition, 479-412 BC.  17.17 grams, 27.55 mm

Obv: Crab, no symbol. 
Rev: AKRAC-ANTOS (N retrograde), eagle standing left on dotted line.

BMC 38-39; Hoover 78; SNG ANS 970ff; Sear Greece 741.