Argilos, Macedonia. AR hemiobol or 1/48 stater, ca 460-455 BC. 9 mm. 0.42 g. 

Lion's head facing.
A-P-K-I within circular incuse divided into four segments. 

Liampi 130; HGC 488.
Very rare.

With permission of Roma Numismatics E-Sale 101, Lot 166, Oct. 2022.