The circular piece, measuring just over 32 centimeters (12.6 inches) in diameter and weighing 40 kilos (88 lb), displays hieroglyphic writing surrounding two players standing next to a ball.
Lebanese authorities have made a plea with UNESCO to save what remains of the Rachid Karami International Fairgrounds.
The sites in the upper part of the Rhine River valley are known as the origin point of Ashkenazi culture and where the Yiddish language first began to develop over 1,000 years ago.