China
Tang Dynasty (618-690/705-907AD)
AE cash- 3,53 gram- 24,5 mm ,issued ca 621-718AD
obv: four chinese characters Kai Yuan Tong Bao ("The Inaugural currency")(left-shoulder "Yuan",the "jing" component of Kai,does not touch the hole)
rev: blank
Hartill 14.1
Schjöth #312ff