In coin collecting, G-4 refers to a specific grade on the Sheldon scale, which measures the condition of coins. A coin graded G-4 is considered to be in "Good" condition, showing significant wear but still retaining some details and recognizable features. In this grade, the coin may have a heavily worn surface with most of the design elements visible but lacking sharpness. Collectors use these grades to assess the value and desirability of coins.
Lots of wear on the coin and the lowest grading possible.
edge of a coin with grooved lines that run around the entire perimeter of the coin
In coin collecting, it means Brilliant Uncirculated, a very nice coin, but not as good as a Proof coin.
A coin described as "Premium Quality" is an above average example.
It means the front side the "heads" of the coin. The reverse is the opposite end often called the "tails" of a coin.
A coin collection is called, well, a coin collection. The hobby of collecting coins is called numismatics.
a coin collector
It means "premium quality". It is not an official form of grading.
A coin which has "circulated" shows evidence of use in commerce, such as luster interruption, wear, circulation marks, dirt, etc. Conversely, an "uncirculated" coin displays no such evidence.
Coin collecting
While the president has not said much about coin collecting, he has said a lot about education and about the importance of hobbies that are educational. Both stamp collecting and coin collecting teach about geography and about important historical figures, so the chances are, he would be in favor of such hobbies.
Silver dollars are "rated" on a scale of 1 to 70. 70 is the best possible grade. If a coin is graded in MS70 it means that there is absolutely no ware on the coin. G4 is almost the worst grade. If a coin is in G4 it will be very worn, no longer shiny and many of the smaller features will be gone.