This is a vintage L M Royal Halsey very fine china teacup and saucer set from Japan.
This set is yellow-white with a pink rose and gold gild trim. The cup has a pearlescent exterior.
The saucer measures about 5.75" in diameter. The cup measures about 2.5" tall, 3.75" in diameter, and 4.75" wide.
These pieces are in very good pre-owned condition.