Pordosilene, Lesbos, AR Hemiobol, ca 427-405 BC. 6 mm, 0.31 g. 

Head of Apollo right, hair bound in a taenia.
POR, conch or murex shell. 

Erol-Ozdizbay 4; Stauber Adramytteion 4a-4b; SNG France 2392; SNG Ashmolean 1601.

With permission of Numismatik Naumann auction 44, Lot 308, June 2016.