A record-breaking ancient treasure trove of gold coins has been discovered along the Israeli coast, in what is believed to be the largest-ever such find in Israel. The astonishing haul was discovered by accident, when a group of divers from a local diving club at the ancient harbor in Caesarea National Park stumbled upon what they thought was a toy coin discarded by a tourist. But after realizing the coins were “the real thing” they quickly collected several samples and returned to the shore in order to inform the director of the diving club, who in turn reported the discovery to the Marine Archaeology Unit of the Israel Antiquities Authority.

Read More: Unprecedented Hidden Treasure Discovered off Israeli Coast

The largest treasure of gold coins discovered in Israel was found in recent weeks on the seabed in the ancient harbor in Caesarea National Park, the Israel Antiquities Authority (IAA) said on Tuesday. A group of divers from the diving club in the harbor reported the find to the IAA whose officials then went with the divers to the location with a metal detector and uncovered almost 2,000 gold coins from the Fatimid period (eleventh century CE) in different denominations: a dinar, half dinar and quarter dinar, of various dimensions and weight.

Read More: Divers in Caesarea Find Largest Treasure of Gold Coins Ever Discovered in Israel