Palestinians started using coins for transactions in the 5th century BCE, with the Persian conquest of Palestinian lands. The Persian coins replaced the barter system, said Mohammed al-Zard, head of the Palestinian Association of Coins and Stamps Collectors.There were Greek coins minted in Gaza, actually from the 4th century BCE.
He told Al-Monitor that the Persian coins were not used in the entirety of the Palestinian territories, as the coastal areas were controlled by the Canaanites, who introduced their own coins in their dealings with Persians.
“In the third century BC, after the conquest of Alexander the Great, Palestinians traded using Greek coins, which were minted in the ancient Kingdom of Gaza and were also accepted across the Greek territories,” he added.
But there was no ancient Kingdom of Gaza! (Except in Africa in the 19th century.)