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  2. Sheldon coin grading scale - Wikipedia

    en.wikipedia.org/wiki/Sheldon_coin_grading_scale

    Proof coins graded 60 to 70 are mirrored to those of Uncirculated grades with the difference that the coin was not made for circulation. Proof coins with the grade of PR-63 are sometimes called "Choice Proofs". [25] Proof coins that are below the grade of 60 and show signs of circulation or mishandling have been classified as Impaired Proofs ...

  3. 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 ...

  4. Proof coinage - Wikipedia

    en.wikipedia.org/wiki/Proof_coinage

    Certification agencies can grade and assign numerical ratings for proof coins. A PR70 coin is the highest grade possible for a proof coin and indicates a perfect example, with PR69 and lower grades reflecting some deficiency in the strike, centering, details, or other aspect of the coin. Most proof coins are double struck under higher pressure.

  5. Glossary of numismatics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_numismatics

    reverse proof A proof coin that has its fields frosted and the design and lettering with a mirror finish. Standard proof coins have the fields mirrored and the design and lettering frosted. rim The raised portion of the design along the edge that protects the coin from wear. [1] It also makes the coins stackable and easy to roll by machine. round

  6. United States Mint coin sets - Wikipedia

    en.wikipedia.org/wiki/United_States_Mint_coin_sets

    This collection encompasses every coin design produced by the United States Mint in a single year. This is the longest-running series of coins produced by the Mint and comprises coins prepared using proof striking methods. [8] The Mint packages the specially prepared coins in hard plastic cases meant for long-term preservation.

  7. Libertad (coin) - Wikipedia

    en.wikipedia.org/wiki/Libertad_(coin)

    Gold coins made before 2000 are only 90% pure gold. Proof coins contain a frosted angel with a polished background. A reverse proof is the opposite and has a polished angel with a frosted background. [1] An antique finish silver Libertad coin was first released in 2018 with a limited mintage of 40,000. [2]

  8. American Gold Eagle - Wikipedia

    en.wikipedia.org/wiki/American_Gold_Eagle

    Because the term "eagle" also is the official United States designation for the pre-1933 ten dollar gold coin, the weight of the bullion coin is typically used when describing American Gold Eagles (e.g., "1/2-ounce American Gold Eagle") to avoid confusion with the pre-1933 coins. This is particularly true with the 1/4-oz American Gold Eagle ...

  9. United States Mint coin sizes - Wikipedia

    en.wikipedia.org/wiki/United_States_Mint_coin_sizes

    In particular, many silver coins changed in the 1870s. [4] The figures cited in the tables are representative of the series, and are generally the latest, or most common, figures for a given coin type. The largest coin ever minted by the US Mint was the 2019 Apollo 50th anniversary 5ounce silver dollar, weighing 155.517 grams, and 76.2 mm in ...

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