Apple MacBook A1534 ( Space Grey )

Grade A
Grade A classification is achieved when the unit shows very little signs of normal use, the units may have slight wear associated with standard use, this could be minimal minor scuffing or abrasions but will not feature deep scratches, cracks or any other major blemishes.

Grade A / B
Grade A / B should be considered as Grade A but with slightly more signs of use, slight wear on touchpads and keyboards are common in this grade.

Grade B
Grade B units are again fully working but will feature more excessive signs of wear, this may include scratches on side panels and lids and possibly heavier wear on keyboards and trackpads. The units may show some light chips in the paintwork and some minor blemishes here and there, whilst it is unlikely that the unit will feature excessive wear on the screen( where applicable ) there may be the odd small mark.

Grade C
Grade C, these items are again fully working but will feature considerably more signs of wear and cosmetic imperfections. These units will likely feature excessive scratches to metal or plastic panels, larger paint chips and possibly small dents to metal parts. Grade C keyboards and trackpad will often show wear and the screens may have some small marks on them.