Ptolemy III Euergetes, 246-222 BC, Tetrobol

Ptolemy III Euergetes, AE Tetrobol, 246–222 BC, Alexandria; 42.50 g; 42 mm. Obverse: Head of Zeus-Ammon right, with ram’s horn. Reverse: ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ; eagle standing on thunderbolt. Struck at Alexandria on a broad, thick flan characteristic of early Ptolemaic bronze fabric. Reference: Svoronos 974.

Ptolemy III’s reign marked the high point of Ptolemaic power, notably during the Third Syrian War (Laodicean War), when Egypt extended its influence deep into Seleucid territory. The Zeus-Ammon obverse asserts the dynasty’s syncretic link to Egyptian religion and Alexander’s legacy, while the eagle on thunderbolt served as the Ptolemaic dynastic emblem and a declaration of royal authority. The large, heavy bronze denomination reflects the closed-currency practices of Ptolemaic Egypt, where substantial bronze issues, centralized at Alexandria, supplied the domestic economy alongside limited silver.