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  2. US error coins - Wikipedia

    en.wikipedia.org/wiki/US_error_coins

    Doubled die coins are mainly created by a defective hub which is used to create many dies for the minting process. Collectors classify doubled dies as DDO (doubled die obverse coins), DDR (doubled die reverse) and OMM (over mint mark). The over mint mark is created when a one date and mint mark is punched over another date, part of a date, or ...

  3. 5 Most Valuable American Coins Still in Circulation - AOL

    www.aol.com/5-most-valuable-american-coins...

    When the U.S. Mint replaced the Lady Liberty Head nickel with the Indian Head nickel in 1912, five Liberty nickels were illegally made. The fact that these coins even existed was a secret until ...

  4. 4 Decades of Valuable Coins: See Which Are Worth the Most ...

    www.aol.com/4-decades-valuable-coins-see...

    1960 Penny, No Mint Mark, Deep Cameo — Could be worth up to $2,600, depending on condition 1960 Ben Franklin Half Dollar — Worth at least $11 or $12 today, potentially up to $300 or more in ...

  5. Liberty Head nickel - Wikipedia

    en.wikipedia.org/wiki/Liberty_Head_nickel

    It is uncertain how the 1913 nickels came to be made. The Mint's records show no production of 1913 Liberty head nickels, and none were authorized to be made. [39] Dies were prepared in advance and sent to California for a 1913-S Liberty Head nickel coinage, but upon Roberts's instruction to stop coinage, they were ordered returned to Philadelphia.

  6. Today, there exists 11 to 15 in collectors’ hands. 1838-O Capped Bust Half Dollar – The New Orleans mint was the first to produce silver coins, striking only 20 of this particular piece. Nine ...

  7. United States cent mintage figures - Wikipedia

    en.wikipedia.org/wiki/United_States_cent_mintage...

    Matron Head large cent, 1816–1839 (Copper except as noted) Year Mint Mintage Comments 1816 (P) 2,820,982 1817 (P) 3,948,400 (P) 5 Proof 1818

  8. United States quarter mintage figures - Wikipedia

    en.wikipedia.org/wiki/United_States_quarter...

    The following mint marks indicate which mint the coin was made at (parentheses indicate a lack of a mint mark): P = Philadelphia Mint. D = Denver Mint. S = San Francisco Mint. W = West Point Mint. O = New Orleans Mint. CC = Carson City Mint

  9. Mint-made errors - Wikipedia

    en.wikipedia.org/wiki/Mint-made_errors

    A well known example of a small mint mark is 1945-S "Micro S" U.S. Mercury dime, when the mint used an old puncheon intended for Philippines coins. [14] A much rarer example is the 1892-O "Micro O" U.S. Barber half dollar , which may have come about from the brief use of a mintmark puncheon intended for the quarter. [ 15 ]