a few grading terms were used to describe a coin. The terms ranged from Good to Fine and Uncirculated, as well as Proof. However, one person’s “Uncirculated” could easily have been another’s “Fine.” There were no real defined standards.
In 1949, Dr. William H. Sheldon created a 70-point grading scale. The grading scale assigns a whole number between 1 and 70, with 70 being a perfect, flawless coin and 1 being a coin in the worst possible condition. The grade of 70 assumes the Mint could strike a perfect coin.
The next significant step in coin grading took place in 1977 with the publication of The Official ANA Grading Standards for United States Coins. For the first time, numerical grades were clearly defined – complete with illustrations.
ANACS started grading coins in 1979, followed Professional Coin Grading Service (PCGS), which started in 1986. Numismatic Guaranty Corporation (NGC), was founded in 1987. High Mint State coins, must be certified & graded by a 3rd party service before being sold.
2017 saw the launch of MintBuilder.com. the only opportunity in the world to offer ordinary people Fine Mint coins at member pricing as well as Gold & Silver Bullion at cost prices. Not only that MintBuilder.com only sells graded Fine Mint Coins that could one day be, "Worth A Mint!"