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  2. Led Zeppelin IV - Wikipedia

    en.wikipedia.org/wiki/Led_Zeppelin_IV

    The untitled fourth studio album by the English rock band Led Zeppelin, commonly known as Led Zeppelin IV, [a] was released on 8 November 1971 by Atlantic Records. Produced by the band's guitarist, Jimmy Page , it was recorded between December 1970 and February 1971, mostly in the country house Headley Grange .

  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. Certified Acceptance Corporation - Wikipedia

    en.wikipedia.org/wiki/Certified_Acceptance...

    Certified Acceptance Corporation (CAC) is a Far Hills, New Jersey third-party coin certification company started in 2007 by coin dealer John Albanese. The firm evaluates certain numismatically valuable U.S. coins already certified by Numismatic Guaranty Corporation (NGC) or Professional Coin Grading Service (PCGS). [1] [2]

  5. 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 ...

  6. VAM (Morgan and Peace dollar die varieties) - Wikipedia

    en.wikipedia.org/wiki/VAM_(Morgan_and_Peace...

    There are in more than 3,000 different VAMs however the coin certification company Professional Coin Grading Service (PCGS) does not recognize all of them. They recognize 52 VAM Peace dollars and 317 Morgan dollar VAMs [2] A VAM can be a small change in dies like a different sized mint mark, or something more dramatic like a repunched date.

  7. Led Zeppelin - Wikipedia

    en.wikipedia.org/wiki/Led_Zeppelin

    Their untitled fourth album, commonly known as Led Zeppelin IV (1971), is one of the best-selling albums in history, with 37 million copies sold. It includes "Black Dog", "Rock and Roll" and "Stairway to Heaven", with the latter being among the most popular and influential works in rock.

  8. Coin slab - Wikipedia

    en.wikipedia.org/wiki/Coin_slab

    Coin slab is a type of holder for a coin. Slabbed coins are typically from one of the coin grading companies. The practice of sending coins to third-party grading companies and then "slabbing" them began in 1986. When a grading company grades the coin it is sealed in a tamper proof slab with a barcode and a hologram. To prevent counterfeiting ...

  9. Led Zeppelin discography - Wikipedia

    en.wikipedia.org/wiki/Led_Zeppelin_discography

    Led Zeppelin III (1970) was a softer, more folk-based effort compared to the hard rock of the band's previous releases. [8] It also peaked at number one in the UK and in the US. Led Zeppelin's untitled fourth album, often called Led Zeppelin IV and released on 8 November 1971