Kos, Caria, AE12 civic issue, ca 250-210 BC. 1.46 g. Magistrate Teisias. 

Head of Herakles left, wearing lionskin headdress.
KWI(ON) TEISIAS above and beneath crab with club below. 

BMC 98; Ingvaldsen XVI, 105-108; Berlin 92; Paris 1262b; Waddington 2748.

With permission of Numismatik Naumann Auction 142, Lot 307, July 2024 (attrib. as Ingvaldsen XVIII, 15, which has no club).