VERY GOOD / A
All VERY GOOD grade devices are fully functional. They appear flawless at first glance. They have a few, very minor blemishes that are only uncovered upon close inspection and / or rotating them under the light. These blemishes are often found near the ports, corners or the Apple logo.
GOOD / B
All GOOD grade devices are fully functional. They may appear flawless at first glance. They may either have several faint, small scratches or a few longer, faint scratches on the screen. They may have light scuffs on their housing. They may have small dings, blemishes, and / or nicks which are often found near ports, corners or edges. A small percentage may have one slightly more pronounced imperfection, if they are in otherwise excellent condition.
FAIR / C
All FAIR grade devices are fully functional. They appear heavily used at first glance. They may have more pronounced, deeper scratches on their screen or housing they can be felt easily with a fingernail. Their housing may have numerous scuffs, scratches, dents or other abnormalities. They may have dings, dents and heavy wear on their ports, corners and edges.