During the manufacturing process imperfections have been deliberately created. These give the item an older, used  and more 'antique' look than it would have if it had been made to be perfect. There may be parts of a design missing, slight bumps or other surface imperfections or irregularities in the glaze. These are meant to give the careworn and well used look of a much older item to a recently manufactured product. This distressed finish is not to be regarded as a fault.