This is a tea caddy from the Shinsui kiln, run by Shinshui Ichino, a master potter of Tamba ware. It has a characteristic Tamba ware finish, and the quality is such that it could be said to be in the Enshu style. The shifuku (protective silk bag) has a striped design that would likely appeal to Masako Shirasu. There are many Shinsui kiln tea caddies available, so I recommend choosing one based on the shifuku's design. With a matching box. Width: 6.5cm, Height: 8.5cm Search terms: Tamba Tateko-yaki, Bizen ware, antique