Mosaic from Thmuis,

Mosaic from Thmuis, Egypt, created by the Hellenistic artist Sophilos (signature) about 200 BC, now in the Greco-Roman Museum in Alexandria, Egypt. The woman depicts the Ptolemaic Queen Berenike II (who ruled jointly with her husband Ptolemy III) as the personification of Alexandria. Dr. Joann Fletcher (Cleopatra the Great: The Woman Behind the Legend, New York: Harper, 2008, ISBN 978-0-06-058558-7, plates between pp. 246-247) writes that Queen Berenike II's headdress shows a ship's prow, while she sports an anchor-shaped brooch for her robes, symbols of her kingdom's naval prowess and successes in the Mediterranean Sea.

public domain