Coin collecting is not just about having more and more coins.  More important than the number of coins is the quality of those coins.  This property is measured by the grade of coins and the grade is measured using a scale from zero to seventy (seventy highest point grade).  Doctor William Shelby introduced the point in his work "Penny Whimsy".

 The coins are classified here according to grade.

 1. "Almost Uncontrolled" Coins

 "Almost uncontrolled" coins have a point grade of 50, 55, or 58.

 It is very important to note that coin collectors in these coins have to know the locations of the high points in a particular coin.  By examining the difference of reflected light in high points in other parts of the coin, an "almost uncontrolled" coin is distinguished from the coins of the Mint State.

2. "Mint State" Coins

 This is equivalent to a value of 60 to 70 in Shelby's grade scale.  This means that there is no defect of the coin.  Most of the coins in this category are shiny, new coins of no size.

3. "Fine Coins"

 These can further be classified as "superlative" (40, 45), "superlative" (20, 25, 30, and 35) or "fine" (12), depending on the sharpness of the remaining details on the coins.  .  The coins are celebrated for wearing but the designs are still intact.

 For "extremely fine" coins, peppermint luster is still present.

 "Very fine" coins can be compared to those that have been in use for 1-3 years.  The minor features of the coins are already gone.

 4. "Good Coins"

 Coins of this category are worn.  Only the weak designs can be seen since the details of the coins in the high numerals are almost smooth.

These coins can be specifically defined as "Very Good" (12), "Good" and "Almost Good" coins.

 Full rims should be seen for the category of "Very Good" coins.

 In the case of "good" coins, the mint mark and date should be visible.

 On the other hand, "almost good" coins are most commonly worn in this category of coins.

 5. "Fair Coins"

 Coins are "bad", but can still be distinguished as one of a kind of coins - as long as one can identify the coin, it is a "Fair C".

 6. "Basel Coin"

 These metals can be determined as coins - but such coins are unspecified.

 With the described classification, it would be very easy to grade the coins.  Just remember that the knowledge of the grade of coins benefits the coin takers!