Royal Doulton Mugs SET of 4 Ellen deGeneres ED 4"H 14 oz Cobalt Blue with bisque bases.  In March,2016,Royal Doulton chose to alignwith an ED line of porcelain because of a shared value of cheerfulness and spontaneity that Ellen deGeneres represents. The long history of quality found in Royal Doulton porcelain products  definitely makes these mugs collectibles.