MACEDON. Kingdom of Macedon. Antigonus II Gonatas, 277-239 B.C. AR Tetradrachm (17.15 gms).SNG Cop-1199. Macedonian shield motif with left facing head of Pan in center; Reverse: Helmeted Athena advancing left armed with shield and thunderbolt, monogram to right, Macedonian helmet to left. Excellent strike nearly obliterating all but minor traces of the undertype with nearly perfect centering. Lovely cabinet tone and quite attractive.