Mint Condition: When we say mint, we mean mint. No wear, like new out of the box.
Excellent Condition: Very clean, might have some minor wear, dings, scratches, or finish cracks, but otherwise very close to new condition.
Very Good Condition: Basically clean, might have some deeper scratches, pick wear, or missing finish. Nothing really serious and no cracks, unless otherwise stated.
Good Condition: Solid playing condition, may have one or more repaired cracks or other cosmetic flaws.
Fair Condition and Poor Condition: Indicate that the instrument may have some serious problems, usually described.