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2. Numismatic Guaranty Company - Wikipedia

   en.wikipedia.org/wiki/Numismatic_Guaranty_Company

   Numismatic Guaranty Company (NGC) is an international third-party coin grading and certification service based in Sarasota, Florida. It has certified more than 60 million coins. NGC certification consists of authentication, grading, attribution, and encapsulation in clear plastic holders. NGC is a subsidiary of Certified Collectibles Group (CCG ...

3. Coin shows in the United States - Wikipedia

   en.wikipedia.org/wiki/Coin_shows_in_the_United...

   A coin show is an event where coin collectors and coin dealers attend to buy, trade and sell coins. [1] Like other hobby shows, a show hall is arranged with aisles and tables where coin sellers can display their coins. In cities across the United States there are thirty to fifty smaller local shows each weekend.

4. Columbian half dollar - Wikipedia

   en.wikipedia.org/wiki/Columbian_half_dollar

   1892. The Columbian half dollar is a coin issued by the Bureau of the Mint in 1892 and 1893. The first traditional United States commemorative coin, it was issued both to raise funds for the 1893 World's Columbian Exposition and to mark the quadricentennial of the first voyage to the Americas of Christopher Columbus, whose portrait it bears.

5. Ancient coins found by Indiana Jones enthusiast sell ... - AOL

   www.aol.com/ancient-coins-found-indiana-jones...

   September 19, 2024 at 9:42 AM. A British man who found a massive cache of ancient Roman gold and silver coins while hunting with a metal detector has a lot more modern currency in his pocket after ...

6. Professional Coin Grading Service - Wikipedia

   en.wikipedia.org/wiki/Professional_Coin_Grading...

   Professional Coin Grading Service (PCGS) is an American third-party coin grading, authentication, attribution, and encapsulation service founded in 1985. The intent of its seven founding dealers, including the firm's former president David Hall, was to standardize grading. [4][5] The firm has divisions in Europe and Asia, and is owned by parent ...

7. Drug Interaction Checker - Find Interactions Between Medications

   www.webmd.com/interaction-checker

   The main types are: Drug-drug interaction. This is when a medication reacts with one or more other drugs. For example, taking a cough medicine (antitussive) and a drug to help you sleep (sedative ...