This is a beautiful 10.5-inch high hexagonal  Ginger Jar from Cauldon Ltd. It features the stunning "Italian" pattern in blue and white, similar to the Spode pattern produced today. It was produced between 1905 and 1920, therefor "Antique".  The jar was produced by Cauldon Ltd, and carries the back stamp used between 1905, and the company liquidation in 1920.

I had some difficulty with the lighting, it caused the jar to look off centre in some of the pictures, I have checked the diameters on the top and bottom, and they all match, the "hexagon may have altered the perspective slightly.