how are coins graded

Coin Grading Scales and How are Coins Graded

Grading Scales Since rare coin quality varies widely, numismatists have adopted several coin-grading methods to assign more specific levels of quality to rare coins. The overwhelmingly popular method to use is the American Numismatic Association (ANA) grading scale. The…
doubled dies

Doubled Dies – What are they and how much are they worth?

Doubled dies or the “doubled die” variety, is one of the most popular die varieties for collectors.  Because doubled dies are so popular, there is a lot of information out there about these varieties and they are often seen…
coin machine doubling coin world

Coin World Sneak Peak on Unique Machine Doubling Examples

An unusual case of machine doubling What is called “machine doubling” is a fairly common occurrence on coins and is a manifestation of press instability, writes Mike Diamond in his “Collectors’ Clearinghouse” column. The featured coin this week displays…