Helium.com | Antiques & Collecting (Other) | How to grade coins http://www.helium.com/knowledge/194013-how-to-grade-coins.xml Helium.com > Antiques & Collecting (Other) > How to grade coins en-us Copyright Helium.com Tue, 25 Nov 2008 15:19:39 GMT Tue, 25 Nov 2008 15:19:39 GMT In order to determine a coin's value or market related value, collectors have their coins graded. The grade of a coin is primarily based on: 1) The... http://www.helium.com/items/1668094-grading-coins Mon, 30 Nov 2009 23:07:06