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  2. 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 ...

  3. Numismatic Guaranty Company - Wikipedia

    en.wikipedia.org/wiki/Numismatic_Guaranty_Company

    NGC Cert Lookup verifies all NGC-certified coins and helps combat holder counterfeiting. Using the label serial number, NGC will reveal a coin's date, denomination, grade, photo (if any), and pricing and Census info. NGC Coin Explorer lists key info about many coin issues, such as mintages and values. [15]

  4. Counterfeit money - Wikipedia

    en.wikipedia.org/wiki/Counterfeit_money

    Scraps of precious metals collected in this way could be melted down and even used to produce counterfeit coinage. A fourrée is an ancient type of counterfeit coin, in which counterfeiters plate a base-metal core with precious metal to resemble the solid-metal counterpart. The Chinese government issued paper money from the 11th century AD.

  5. 5 Items From the 1970s That Are Worth a Lot of Money - AOL

    www.aol.com/finance/5-items-1970s-worth-lot...

    Instead, it conjures up images of vinyl records and toys still made from metal. Find Out: 12 Best Things To Sell at a Pawn Shop For Extra Cash Discover More: 8 Rare Coins Worth Thousands That Are ...

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    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  7. 9 of the world’s most valuable coins - AOL

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

    The “silver” coins of today are not really made of silver, but these low denominations at one time were! Silver coins minted before 1964 contained 90 percent actual silver, and of the coins on ...

  8. Trusted timestamping - Wikipedia

    en.wikipedia.org/wiki/Trusted_timestamping

    According to the RFC 3161 standard, a trusted timestamp is a timestamp issued by a Trusted Third Party (TTP) acting as a Time Stamping Authority (TSA). It is used to prove the existence of certain data before a certain point (e.g. contracts, research data, medical records, ...) without the possibility that the owner can backdate the timestamps.

  9. Play Slots Lounge Online for Free - AOL.com

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    Free premium casino-style slots and classic video poker by the creators of authentic PC & Mac casino slots from IGT, WMS Gaming, and Bally!