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Sicily. Akragas. Countermark on earlier AE Hemilitron , c. 405-367 BC. Obv. Oval incuse countermark containing shell; traces of undertype (Crab and crawfish). Rev. Traces of undertype (Eagle standing right on prey). CNS I CM 100; HGC 2 136. 15.38 g. 28.00 mm. VF.