Hi. If I am not wrong,it is: KM#391 1 cash (cast brass), 1796-1799 , Board of Works mint (in Beijing), old branch, 24 mm. CHINA QING DYNASTY: Qianlong (1736-1795) Obv: Qianlong tongbao. Rev: Boo yuwan. The Shanlongs (Type H) were cast during the period in which Qianlong had officially abdicated in favor of Jiaqing, but was still ruling as the Great Super Emperor (1796-1800). The type is comprised of coins with a special form of long and a six stroke, open bei.
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