Apollonia, Macedonia, AE15 civic issue, ca. 400-350 BC. 2.4 g.

Head of nymph right, wreathed with reeds.
APOLLWNIANWN, lion's head facing. 

Imhoof Miszellen 8 ("Thessalian", this coin).
A couple of these have been sold over the past few years, e.g. 
Roma Numismatics E-Sale 60, Lot 186, Aug. 2019; Nomos AG - obolos 9, Lot 526, March 2018; Roma Numismatics E-Sale 39, Lot 111, Aug 2017; Pecunem & Naumann Auction 43, Lot 194, May 2016.