Mellor, Taylor & Co England 1884 Warranted Ironstone 16.5" White Platter RARE

Mellor, Taylor & Co England 1884 Warranted Ironstone 16.5" White Platter with RARE Logo Trademark Marking- I can not find any other piece online with this marking. Platter does have signs of age with some small amount of chipping, crazing, markings and a little discoloration- which i feel is expected with the age of the piece. Please see pictures. Platter is heavy- almost 5lbs alone.