descent
Contributor

It was by pure chance that members of a diving club in the Roman-era port [of Caesarea] had come across the coins, which the authority said weighed nine kilograms (almost 20 pounds) but described as “priceless”.
“At first they thought they had spotted a toy coin from a game and it was only after they understood the coin was the real thing that they collected several coins and quickly returned to the shore in order to inform the director of the dive club about their find,” it said.
article in The Guardian
"the coins were meant to pay the salaries of the [11th century] Fatimid military garrison which was stationed in Caesarea"
article in the Jerusalem Post