This is a very race mid century Tigo Ware ceramic salt, pepper and mustard pot cruet set designed by Tibor Reich (1916 - 1996). All the pieces are in excellent condition and have the original red stoppers. (There is a very tiny hairline flaw near the top of the pepper shaker.) Tigo Ware was unable to keep up with the production demand in the early 1950's and the "Clowns" cruet set was then manufactured by Bourne Denby, England after they merged. https://www.potteryhistories.com/Denbywares.html