Fully functional with signs of limited usage - Very little wear. Any screens are free of imperfections.
Cosmetic Grade B
Fully functional with signs of normal usage - Most commonly small scratches and/or slight dents. Any Screens will have very minor blemishes that will not affect display.
Cosmetic Grade C
Fully functional with signs of considerable usage - most commonly large scratches, dents, chipped/broken plastic, cracks, worn corners, and/or discoloration. Any screens will have noticeable defects.