Watch List notes:

KINGS of MACEDON. Philip III Arrhidaios. 323-317 BC. AR Drachm (16mm, 4.24 g, 11h). Kolophon mint. Struck under Menander or Kleitos, circa 322-319 BC. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; ΠA monogram in left field. Price P46. In NGC encapsulation, graded AU(star), Strike: 5/5, Surface: 5/5.

This coin was struck with a reverse die originally of type Price P47, with an A below the throne. The A was erased in the die, but is still barely visible.