Antiochia ad Orontem in Syria, 300-281 BC., Seleukos I Nikator, Æ21, Houghton 3 var.

Antiochia ad Orontem in Syria, Seleucid kingdom, Seleukos I Nikator, struck ca. 300-281 BC.,
Æ21 (20-21 mm / 9,02 g),
Obv.: laureate head of Apollo right, circular countermark on cheek: horse's head (?).
Rev.: ΒΑ-ΣΙΛΕΩΣ / ΣΕΛΕΥΚΟΥ , Athena Promachos standing right, holding spear and shield.
SNG Spaer 6 ; Houghton 3 .