Syracuse, Sicily, under Hieron II, 275-215 BC. AR litra. 
12mm, 0.77 g. Struck ca. 216-215 BC. 

SYRAKOSION beneath head of Athena left, wearing Corinthian helmet.
XIII with three dots to left, E below. 

Caltabiano 317; Hoover HGC 1426 var. (= legend on reverse).
Very rare. 

With permission of Numismatik Lanz München, June 2013