Antigonos Gonatas, king of Macedonia, 277-239 BC. AE19 Tetrachalkon, 6,46g. 

Helmeted head of Athena right.
B-A above, ANTI monogram below, Pan standing right, erecting trophy. K over F in left field.

Poulios 67, not in Cop, Mionnet, Munich etc. with these fieldmarks.

With permission of Münzzentrum Rheinland - Auction 186, Lot 77, Oct. 2018.