Lycia, Uncertain Dynast AR stater, ca. 500-440 BC. 9.30g.

Bearded sea-serpent left.
Bearded sea-serpent left in a dotted square border within an incuse square.

Rosen 708 (this coin).
 
Ex Sternberg auction VIII, lot 141, Nov. 1978 and 
ex Jonathan P. Rosen Collection sale, Monnaies et Médailles 
Basel SA, auction 72, lot 348, Oct 1987.