Four Chinese characters (seal script) Xuan He Tong Bao (large characters, squarish Bao) / Blank. 27mm, 5.27 grams. Issued in 1119-1125 AD. Schjoth #-(659 var); Hartill 16.477.

The Song dynasty was a Chinese dynasty that ruled from 960 to 1279 and is renowned for its economic prosperity, technological innovation, and cultural achievements. Divided into the Northern Song (960–1127) and Southern Song (1127–1279) periods, it oversaw major advances in printing, gunpowder, navigation, and commerce. The Song economy was among the most developed in the medieval world, with thriving cities and extensive domestic and international trade. Despite its cultural and economic strength, the dynasty ultimately fell to the Mongols under Kublai Khan in 1279.

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