Watch List notes:

Kings of Macedon, Amphipolis, Diobol in the name of Alexander III, ca. 336-323 BC; AR (g 1,30: mm 11; h 12); Head of Heracles r., wearing lion's skin, Rv. AΛEΞANΔPOY, two eagles facing one another. Price 155; Müller -.
Very rare, porous metal, anyway about extremely fine.

Estimate: 400 GBP