★ Nautical control mark ★

KINGS OF MACEDON: Alexander III 'the Great' (336-323 BC), issued c. 310-275 BCE, AR Drachm. Uncertain mint in Macedon or Greece, 4.19g, 17mm.
Obv: Head of Herakles right, wearing lion skin.
Rev: AΛEΞANΔPOY.
Zeus seated left; aplustre in left field.
Price 862A.
From the Tiberius Collection.
An aplustre was the ornament on a ship’s stern.