The reason why we ask for photos of the actual unit a seller is wanting to sell is to show the exact cosmetic condition of the item.
That way any interested buyer can see any 'dings', dents, scratches, and scrapes. This applies to the rear of the unit as much as it does to all those sides that are more visible. At worse the speaker terminals might be damaged.
But you have now complied with all the rules, so Good Luck With the Sale.