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  2. Trade dollar (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Trade_dollar_(United...

    The United States trade dollar was a dollar coin minted by the United States Mint to compete with other large silver trade coins that were already popular in East Asia. The idea first came about in the 1860s, when the price of silver began to decline due to increased mining in the western United States .

  3. Trade dollar - Wikipedia

    en.wikipedia.org/wiki/Trade_dollar

    1877 United States Trade Dollar pattern. The United States trade dollar is a silver ( fineness of .900 or 90%) dollar coin that was issued by the United States Mint and minted in Philadelphia, Pennsylvania , Carson City, and San Francisco from 1873 to 1885.

  4. Coronavirus - Wikipedia

    en.wikipedia.org/wiki/Coronavirus

    The human coronavirus NL63 shared a common ancestor with a bat coronavirus (ARCoV.2) between 1190 and 1449 CE. [76] The human coronavirus 229E shared a common ancestor with a bat coronavirus (GhanaGrp1 Bt CoV) between 1686 and 1800 CE. [77] More recently, alpaca coronavirus and human coronavirus 229E diverged sometime before 1960. [78]

  5. Obsolete denominations of United States currency - Wikipedia

    en.wikipedia.org/wiki/Obsolete_denominations_of...

    The United States has produced several coins and banknotes of its dollar which no longer circulate or have been disused. Many of these were removed for specific reasons such as inflation reducing their value, a lack of demand, or being too similar to another denomination.

  6. COVID-19 pandemic in the United States - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic_in_the...

    Weekly confirmed COVID-19 deaths Map of cumulative COVID-19 death rates by U.S. state [8] On December 31, 2019, China announced the discovery of a cluster of pneumonia cases in Wuhan. The first American case was reported on January 20, [9] and Health and Human Services Secretary Alex Azar declared a public health emergency on January 31. [10]

  7. Numismatic history of the United States - Wikipedia

    en.wikipedia.org/wiki/Numismatic_history_of_the...

    The Coinage Act of 1792 established the United States Mint and regulated the coinage of the United States. [3] The act created coins in the denominations of Half Cent (1/200 of a dollar), Cent (1/100 of a dollar, or a cent), Half Dime (also known as a half disme) (five cents), Dime (also known as a disme) (10 cents), Quarter (25 cents), Half Dollar (50 cents), Dollar, Quarter Eagle ($2.50 ...

  8. Trade-dollar locket - Wikipedia

    en.wikipedia.org/wiki/Trade-dollar_locket

    A trade-dollar locket, also known as a box dollar or an opium dollar, is a type of locket created from two coins, typically trade dollars, that were hinged together to form a hidden compartment. As trade dollars circulated in Asia in the late 19th century, the lockets were popularly thought to be used to carry opium concealed in the secret ...

  9. Dollar coin (United States) - Wikipedia

    en.wikipedia.org/wiki/Dollar_coin_(United_States)

    A modern Gold dollar. The dollar coin is a United States coin with a face value of one United States dollar. Dollar coins have been minted in the United States in gold, silver, and base metal versions. Dollar coins were first minted in the United States in 1794. Dollar coins have almost never been popular in circulation since their inception.