Gergis, Troas, AE 14mm, 4.86 g. 350-241 BC. 

Laureate head of Sibyl Herophile facing slightly right.
GER, Sphinx sitting right. AMT monogram in left field, caduceus in exergue.

SNG Turkey 9, 544 corr. (symbol mistaken for a corn ear).

With permission of Savoca Numismatik Blue Auction 6, lot 381, April 2018.