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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 was founded in 1987 in Parsippany, N.J. by John Albanese, who also founded Professional Coin Grading Service. A majority stake was later purchased by coin dealer Mark Salzberg. Along with CEO Steven Eichenbaum, Salzberg owns the CDN Greysheet, a price guide for coins similar to the Kelley Blue Book. [2]

  4. Professional Coin Grading Service - Wikipedia

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

    A comprehensive survey of major coin dealers, carried out in collaboration with the Professional Numismatists Guild (PNG) and the Industry Council For Tangible Assets (ICTA), disclosed that PCGS received the dealers' top-tier "Superior" rating, which was the highest rating granted to any service. Among the other 10 grading services scrutinized ...

  5. 10 of the Most Valuable Pennies - AOL

    www.aol.com/finance/10-most-valuable-pennies...

    If you think you may have pennies worth money, make sure you get to a reputable coin dealer or professional coin grading service. Explore More: Check Your $2 Bills — They Could Be Worth a Ton 10 ...

  6. Collectors Universe - Wikipedia

    en.wikipedia.org/wiki/Collectors_Universe

    Collectors Universe Inc. is an American company formed in 1986, now based in Santa Ana, California, which provides third-party authentication and grading services to collectors, retail buyers and sellers of collectibles. Its authentication services focus on coins, trading cards, sports memorabilia, and autographs.

  7. 3 Coins From the 1950s That Are Worth a Lot of Money - AOL

    www.aol.com/3-coins-1950s-worth-lot-110141541.html

    Another group of coins that can get collectors excited are commemorative coins issued in 1950 and 1951 from the Philadelphia, Denver and San Francisco mints: These commemorative half-dollars ...