Watch List notes:

ISLANDS OFF MYSIA, Pordosilene. Circa 450-400 BC. Hemiobol (Silver, 7.5 mm, 0.46 g, 3 h). Bearded head of Silenos to right, with an animal ear. Rev. Π - ΟΡ Dolphin swimming downwards to right; all within incuse square. HGC 6, 1765. SNG von Aulock 1765 (this coin). Rare. Nicely toned, sharp and attractive. About extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, ex Münzen und Medaillen FPL 373, November/December 1975, 68 ("unique"), and from the collection of H. von Aulock.