$5 Liberty Gold Coins MS 63
MS 63 is the contraction for the denotation "Mint State Grade 63". This grade is part of the Sheldon coin grading scale. This scale was developed in 1949 by Dr. W. H. Sheldon. Coins in this grade are uncirculated, and pleasant to the eye. Old gold coins such as the $5 Liberty are seldom seen in grades higher than MS 65, and the rarity and value increases with the Mint State designation.
Specifics of the Grade
A $5 Liberty gold piece in MS 63 condition will still have areas of bright gold shine, or what the numismatists call "Mint luster". Any marks or scuffs on the coin will be relatively few or small compared to coins of lower grades. The details of the coin were most likely sharp at the time of the original striking of the coin, but mars such as "Bag marks" or scratches caused by coins on the top of a sack of stored coins rubbing on the coins below them, can result in a grade of MS 63.