$2.5 Indian Head Gold Coins MS 61Grade DefinitionMS 61 is a contraction for the denotation of "Mint State Grade 61" as denoted by the Sheldon scale, developed by William H. Sheldon in 1949. All graded coins that ITM Trading deals in are graded either by PCGS or NGC, and use this grading system. "Mint State" means the coin is in uncirculated condition, and this specific delineation begins at MS 60.Specifics of the GradeA $2 1/2 Indian gold piece in MS 61 condition will still retain some of it's original luster from the immense pressures created by the U.S. Mint presses, but there will be visible areas where this luster or sheen has been worn. Marks or scratches on the "Field" or blank area making up the background of the coin can either be pronounced or somewhat numerous. There may be some damage to the stamped or "Incused" designs as well.