This very rare Pearlware form has a deep base, insert and cover, and dates about 1820. It was likely used to keep scrambled eggs hot (with the base filled with hot water). Although, in Gillian Neale's "Encyclopedia of British Transfer-Printed Pottery Patterns", she calls the insert shape a "rare baker".

The pattern is "Standard Blue Willow". Several Staffordshire potters used the "lion handles" during that time. I believe this was made by John Rogers, as I've seen marked serving pieces (impressed ROGERS) on-line with the same shape and exactly the same lions. Rogers wares were often unmarked. The Rogers pottery was in Dale Hall, Longport, Staffordshire.

The base measures about 12" long (including the handles), and 8" wide. The height is about 8". The 3 pieces are in astonishingly good condition. A few small imperfections are shown in the photos. The base has an inscribed 10 as the only mark.

I'll bet you cannot find another 3-part example! If you do, please let me know.