These are Reverb’s guitar condition definitions: Mint: Completely blemish-free and have not been modified in any way. Excellent: Has been used, but only has minor cosmetic defects. Very good: More cosmetic imperfections than Excellent, but still in great condition overall. Good: In fine working order but have significant cosmetic imperfections. Fair: Have various imperfections that impact the function of the item. Poor: Have clear functional problems that will generally require repair. Non-functioning: Guitars that simply do not work.