Definitions for "mint state"
A numerical grade indicating the degree of perfection of the condition of a coin which is classified as uncirculated, ranging from 70 for a coin in perfect condition to 60 for a coin which is uncirculated but may have a weak strike, or numerous small scratches from being handled in mint bags; usually used as the abbreviation MS; as, an MS-67 Morgan Dollar.
A previously uncirculated bullion coin in 'perfect' condition.
The condition of a coin when it left the Mint and its overall survival condition. Modern mint state grades range from MS60, which could have several bag marks and some mint luster to MS 70 which is considered near perfect.