This is a "Ruri Tsubaki Tea Set" from Fukagawa Seiji, an established Arita-yaki porcelain manufacturer. It's a rather old tea set, a rare item that has been displayed in a cupboard for many years (nearly 50 years?). It shows no signs of use. Each teacup and teapot has extremely small pinholes. Size: Teapot: Approximately 6.5cm in diameter (excluding handle and spout) Approximately 13cm in height (including lid) Teacups: Approximately 5.9cm in diameter Approximately 6.8cm in height