Kai Qing Tong Bao

Vladimir Belyaev
October 10, 1998
Obverse: Kai Qing Tong Bao Kai Qing Tong Bao

Reverse: plain

Diameter: 25.1 mm
Weight: 2.5 g

Coin with legend Kai Qing Tong Bao was issued during Southern Sung reign title Kai Qing (1259 a.d.). But all known coins have Yuan Yuan character (first year of reign title).
Shown coin have relatively small weight, is very thin and have flat reverse, similar to Vietnamese coins.

Chinese Coinage Web Site