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In page Dollar:

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There are two quotes in the plays of William Shakespeare referring to dollars as money. Coins known as "thistle dollars" were in use in Scotland during the 16th and 17th centuries,[1] and use of the English word, and perhaps even the use of the coin, may have begun at the University of St Andrews.[2] This might be supported by a reference to the sum of "ten thousand dollars" in Macbeth (act I, scene II) (an anachronism because the real Macbeth, upon whom the play was based, lived in the 11th century). In the Sherlock Holmes story "The Man with the Twisted Lip" by Sir Arthur Conan Doyle, published in 1891, an Englishman posing as a London beggar describes the shillings and pounds he collected as dollars.[citation needed]