Pyrrhos, King of Epirus and Macedonia. AE17. 274-272 BC. 4 g. Struck at uncertain mint in Macedonia. 

Macedonian shield, PYR monogram in the centre, surrounded by six  double crescents with dot in each and dot between them. 
AHTR monogram between BA-SI beneath pileus-shaped helmet, all in wreath.

Unpublished monogram (AHT alone is known). CNG 235, 75

With permission of cngcoins.com, auction 235, Lot 79, June 2010.
Another sold by Roma Numismatics E-Sale 29, Lot 95, Aug. 2016.