Kai Yuan coin, Tang dynasty (621-907), bronze. The first Tang emperor, Gaozu, in 621, started what would later become the currency used by all the Emperors of this Dynasty: the Kai Yuan, the writing that appears on the vertical axis.
D/ Kai Yuan Tong Bao (inauguration currency - ABDS); lishu(administrative) script.
R/ Fingernail print at top right corner of hole.
In the Museum since 1911.
