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2. Standard Catalog of World Coins - Wikipedia

   en.wikipedia.org/.../Standard_Catalog_of_World_Coins

   2020 Standard Catalog of World Coins - 2001–Date, 14th Edition, publication date 2019, Krause Publications, ISBN 978-1-4402-4897-9; All with digital copy available separately. Other related catalogs. Collecting World Coins: Standard Catalog of Circulating Coinage - 1901–Present, 15th Edition, publication date 2015, Krause Publications, ISBN ...

3. Worldcoin - Wikipedia

   en.wikipedia.org/wiki/Worldcoin

   Worldcoin is a for-profit cryptocurrency project that uses iris biometrics developed by San Francisco- and Berlin-based Tools for Humanity.Founded in 2019 by OpenAI chief executive Sam Altman, Max Novendstern, and Alex Blania, it has accumulated $250 million in funding from venture capital firms Andreessen Horowitz and Khosla Ventures, as well as from Reid Hoffman.

4. List of most expensive coins - Wikipedia

   en.wikipedia.org/wiki/List_of_most_expensive_coins

   List of most expensive coins Price Year Type Grade Issuing country Provenance Firm Date of sale $18,900,000 1933 1933 double eagle: MS-65 CAC United States: King Farouk of Egypt: Sotheby's [1] June 8, 2021 $12,000,000 1794 Flowing Hair dollar: SP-66 CAC United States Neil, Carter Private sale [2] January 24, 2013 $9,360,000 1787 Brasher ...

5. 9 of the world’s most valuable coins - AOL

   www.aol.com/finance/9-world-most-valuable-coins...

   In 2011, the coin fetched 3.7 million pounds (about $6 million) at auction, the second-most expensive ever sold at auction. In 2019, another version of the coin was sold for the same amount in ...

6. History of coins - Wikipedia

   en.wikipedia.org/wiki/History_of_coins

   Coins are a major archaeological source of history. Coins convey information about language, administration, religion, economic conditions, and the ruler who minted those coins. [ 1] Coins were first made of scraps of metal by hitting a hammer positioned over an anvil. The Chinese produced primarily cast coinage, and this spread to South-East ...

7. List of bullion coins - Wikipedia

   en.wikipedia.org/wiki/List_of_bullion_coins

   Bullion coins are government-minted, legal tender coins made of precious metals, such as gold, palladium, platinum, rhodium, and silver.They are kept as a store of value or an investment rather than used in day-to-day commerce.