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  2. Ancient Greek coinage - Wikipedia

    en.wikipedia.org/wiki/Ancient_Greek_coinage

    The three most important standards of the ancient Greek monetary system were the Attic standard, based on the Athenian drachma of 4.3 grams (2.8 pennyweights) of silver, the Corinthian standard based on the stater of 8.6 g (5.5 dwt) of silver, that was subdivided into three silver drachmas of 2.9 g (1.9 dwt), and the Aeginetan stater or didrachm of 12.2 g (7.8 dwt), based on a drachma of 6.1 g ...

  3. Penny debate in the United States - Wikipedia

    en.wikipedia.org/wiki/Penny_debate_in_the_United...

    New Zealand eliminated one- and two-cent coins of the New Zealand dollar in April 1990, and the five-cent coin in October 2006. [44] At US military bases overseas, AAFES rounds up or down to the nearest one-twentieth denomination of currency. [45] However, many nations still use coins of similar or smaller value to the United States cent.

  4. Coinage Act of 1873 - Wikipedia

    en.wikipedia.org/wiki/Coinage_Act_of_1873

    The Coinage Act of 1873 or Mint Act of 1873 was a general revision of laws relating to the Mint of the United States.By ending the right of holders of silver bullion to have it coined into standard silver dollars, while allowing holders of gold to continue to have their bullion made into money, the act created a gold standard by default.

  5. Numismatics - Wikipedia

    en.wikipedia.org/wiki/Numismatics

    Numismatics is the study or collection of currency, including coins, tokens, paper money, medals, and related objects.. Specialists, known as numismatists, are often characterized as students or collectors of coins, but the discipline also includes the broader study of money and other means of payment used to resolve debts and exchange goods.

  6. Identifying marks on euro coins - Wikipedia

    en.wikipedia.org/.../Identifying_marks_on_euro_coins

    Luxembourg euro coins dated 2007-2008 were produced at Monnaie de Paris, in Pessac, France and bear the mint master mark of Hubert Larivière, Director of the Paris Mint. As of 2009, coins are again minted at the Royal Dutch Mint in Utrecht, the Netherlands. Until 2015 it was again the mint master mark of Maarten Brouwer.

  7. Countermarked yen ("Gin") - Wikipedia

    en.wikipedia.org/wiki/Countermarked_yen_("Gin")

    Countermarked one yen coin showing the "gin" stamp on the obverse left side. (stamped in Osaka) Countermarked yen refers to Japanese trade dollars and 1 yen coins that are stamped 銀 (gin), literally meaning "silver" (pronounced with hard 'g'). The countermark was added by the Japanese government in 1897 to these coins dated up to that point.

  8. Apollo 11 50th Anniversary commemorative coins - Wikipedia

    en.wikipedia.org/wiki/Apollo_11_50th_Anniversary...

    Coin forum bloggers deemed the sales to be dismal, and that they foretold a poor future for numismatics in the United States. [26] A total of 296,311 Apollo 11 coins were sold in the first 24 hours, with the five-ounce silver dollar the leader both in number sold (51,271) and percentage of the mintage authorization sold (51.3 percent).

  9. Monetae cudendae ratio - Wikipedia

    en.wikipedia.org/wiki/Monetae_cudendae_ratio

    Click on image to read the German version.. Copernicus' earliest draft of his essay in 1517 was entitled "De aestimatione monetae" ("On the Value of Coin"). He revised his original notes, while at Olsztyn (Allenstein) in 1519 (which he defended against the Teutonic Knights), as "Tractatus de monetis" ("Treatise on Coin") and "Modus cudendi monetam" ("The Way to Strike Coin").