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2. Coin grading - Wikipedia

   en.wikipedia.org/wiki/Coin_grading

   Coin grading [1] is the process of determining the grade or condition of a coin, one of the key factors in determining its collectible value. A coin's grade is generally determined by six criteria: strike, preservation, luster, color, attractiveness, and occasionally the country/state in which it was minted. Several grading systems have been ...

3. Sheldon coin grading scale - Wikipedia

   en.wikipedia.org/wiki/Sheldon_coin_grading_scale

   The Sheldon Coin Grading Scale is a 70-point coin grading scale used in the numismatic assessment of a coin's quality. The American Numismatic Association based its Official ANA Grading Standards in large part on the Sheldon scale. [1] The scale was created by William Herbert Sheldon.

4. Third-party grading - Wikipedia

   en.wikipedia.org/wiki/Third-party_grading

   Third-party grading (TPG) refers to coin grading & banknote grading authentication, attribution, and encapsulation by independent certification services.. These services will, for a tiered fee depending on the value of the coin, "slab" a coin and assign a grade of 1–70 on the Sheldon grading system, with 1 being the lowest grade, with only faint details visible to 70, a practically perfect ...

5. American Numismatic Association - Wikipedia

   en.wikipedia.org/wiki/American_Numismatic...

   The American Numismatic Association (ANA) is an organization founded in 1891 by George Francis Heath.Located in Colorado Springs, Colorado, it was formed to advance the knowledge of numismatics (the study of coins) along educational, historical, and scientific lines, as well as to enhance interest in the hobby.

6. ANACS (coin grading company) - Wikipedia

   en.wikipedia.org/wiki/ANACS_(coin_grading_company)

   Originally founded in June 1972 as the American Numismatic Association's authentication service, ANACS expanded into third-party coin grading in March 1979. ANACS was founded in response to the rise in counterfeit and altered coins in the numismatic marketplace. During the coin collecting boom of the 1960s, counterfeiters would alter common ...

7. 15 Valuable American Coins and Which US States You’re Most ...

   www.aol.com/15-valuable-american-coins-us...

   In addition to hoarding wealth, privileged classes began collecting coins for their artistic or historical value centuries ago. Coin collecting and the study of currency, or numismatics, have been...