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The coinage metals comprise those metallic chemical elements and alloys which have been used to mint coins. Historically, most coinage metals are from the three nonradioactive members of group 11 of the periodic table: copper, silver and gold. Copper is usually augmented with tin or other metals to form bronze.
A lump of ancient Vietnamese cash coins in the National Museum of Vietnamese History, Hanoi. The list of coin hoards in Vietnam comprises significant archaeological hoards of coins, other types of coinages (e.g. sycees) or objects related to coins discovered in Vietnam. The history of Vietnamese currency, independent from China, dates back to the Đinh dynasty period with the Thái Bình Hưng ...
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The Bảo Đại Thông Bảo (chữ Hán: 保大通寶; French: Sapèque Bao-Daï) was a round Copper-alloy coin with a square hole produced by the Nguyễn dynasty under French protection and was the last cash coin produced both in Vietnam and the world, this ended a long series of cast Vietnamese coinage that started with the Thái Bình Hưng Bảo in 970. [2]
Vietnamese Bao Dai Thong Bao, last of its type minted in 1933. Cast coinage refers to coins made by pouring melted metal into a mold, i.e. casting. It has been used for regular coins, particularly in East Asia, but also other areas on a smaller scale (e.g. the ancient Mediterranean world). The method differs from the current mode of coin ...
A Chinese coin of the Ming dynasty, inscribed 永樂通寶 (Yong Le tong bao) or Yong Le currency. Yong Le was the regnal name of Emperor Zhu Di (1402–24). Some time around the 7th century BCE, coins shaped like utensils emerged in China. In most regions, spade-shaped coins were issued, while knife-shaped coins were issued in the North-East.
While no cash coins were cast by the final three emperors of the Song dynasty with the dynastic titles, or reign era dates, of Deyou (德佑), Jingyan (景炎), and Xiangxing (祥興), [3] both in the past and in order to meet the demand for such Southern Song dynasty era cash coins by avid coin collectors, a small number of unscrupulous ...
Yongle Tongbao cash coins produced by the Ming dynasty have been unearthed in the East African country of Kenya, in 2010 a team of Kenyan and Chinese archeologists uncovered a Yongle Tongbao cash coin in the village of Mambrui which is just north of Malindi, this coin and other objects of Chinese origin in the area were taken as evidence of how ...