Asia minor, uncertain mint. AR obol, ca 450-400 BC. 11 mm, 0.86 g. 

Forepart of a bull to left, dotted shoulder truncation, dolphin downwards to right.
Crab in incuse square. 

wwxls AR11916, apparently unpublished. 

With permission of Leu Numismatik auction 13, Lot 142, May 2023