The Collaborative International Dictionary
mint state
mint state \mint state\ n. (Numismatics) 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.
Usage examples of "mint state".
It shows no particular, obvious signs of wear but its surface is less perfect than would be required to qualify it as being Uncirculated or as being in Mint State.