Belleek of Ireland produced this beautiful New Shell pattern from 1955-1991. Their delicate opaque porcelain is very thin and light. This creamer and open sugar were given the yellow lustre interior and detailing. The creamer is from 1955, and the sugar from 1955-65, based on marks. To view or purchase, go to https://www.rubylane.com/item/203690-2718/Belleek-Shell-Creamer-Open-Sugar-Yellow?search=1.