Graded Gold Coins
The key to the value of a gold or precious metal coin is its condition. That’s why grading is so important. Graded coins are normally more valuable than ungraded coins, which can be subject to the elements and damage from handling. Collectors prefer coins in the best condition possible, for obvious reasons.
A coin in mint condition will retain more of the fine detail of the original engraving, too. Old and ancient coins are easier to read in better states of preservation, and there is generally more pleasure in owning a coin in almost perfect original condition than there is with a worn specimen. And, of course, there are fewer “old” coins in mint condition than in worn condition.