China, 1662-1670 AD., Ch'ing dynasty, emperor Sheng Zu, T'ai-yuan Fu mint in Shansi province, 1 Cash, Schjöth 1429.

China, Ch'ing (Qing) dynasty (1644-1911 AD.), emperor: Sheng Zu (Sheng Tsu) (1662-1722), reign title: Kang Xi (Kang Hsi) (1661-1722), T'ai-yuan Fu in Shansi province (Taiyuan mint in Shanxi province), issued 1662-1670 AD.,
1 Cash (23 mm / 4,36 g),
Obv.: 康 熙 通 宝 , four chinese characters - (top-down-right-left) around square center hole: Kang Xi Tong Bao (Kangxi tongbao, Kang Hsi T'ung Pao, K'ang Hsi T'ung Pao).
Rev.: Manchu "Yuwan" at left. Chinese "Yuan" 原 at right.
Schjöth 1429 ; KM 324 ; Ding 2258 .

This is one - the "Yuan" part - of a series of twenty coins known as "poem" coins (shi qian), which, according to folklore, have talismanic qualities when placed together. The coins were put in a specific order in which the mint names formed a "poem". The poem did not have a particular meaning, but rhymed according to the rules of classical Chinese poetry.
T'ung Fu Lin Tung Chiang,
Hsuan Yuan Su Chi Ch'ang,
Nan Ho Ning Kuang Che,
T'ai Kuei Shen Yun Chang.