Kos, Caria, AE, ca 3rd-2nd century BC. 1.45g. 

Head of Herakles left, wearing lionskin headdress.
Crab, club below, PEIS (?) in exergue. 

SNG von Aulock 8173 var. (magistrate's name); BMC
86-98 var (ditto)

With permission of Muenzen & Medaillen Deutschland.