Watch List notes:

MYSIA. Pergamon. Circa 310-282 BC. Diobol (Silver, 11 mm, 1.28 g, 12 h). Head of Herakles to right, wearing lion's skin headdress. Rev. ΠEΡΓA Archaistic Palladion: statue of Pallas Athena standing facing, holding spear in her upraised right hand, shield on left arm; to right, thunderbolt. SNG BN 1558. Light porosity, otherwise, good very fine.
From the collection of a scholar.