Vintage Recipe Pie Plate Royal China Jeannette Quiche Lorraine Ceramic Bakeware

Royal China Jeannette Quiche Lorraine Recipe Pie Plate Ceramic Bakeware Doesn’t this recipe sound delicious? I didn’t realize they had these plates for savoury dishes too. Bakewear or display Size 11” A few small dark spots seem to be baked into the finish, as seen in the last 2 photos