This Royal Crown Derby mustard jar is a true gem for collectors and enthusiasts alike. The jar features a Blue Willow pattern on white porcelain with a beautiful art nouveau design. It includes a lid with a cut-out for the spoon handle and a clam shell-like spoon, which is tiny and scalloped. The set is made of fine bone china and was produced in Japan using blue and white pottery production style. The jar belongs to the Mikado XXXIII product line and is an original piece with a stamped backstamp. IThe shape of the jar is round and the color is white porcelain with a blue design. The jar set includes features that make it a unique addition to any collection.