Thank you for viewing. This is a set of 5 sake cups. There is an inscription on the back, but I couldn't read it. They appear to be handmade, and the circular shapes are slightly different, but generally similar, and they stack properly. Diameter: Approximately 6cm They haven't been used often, but they have been stored at home. There are some initial cracks, etc. Please purchase if you understand this. I am also listing other sake cups and ochoko. Thank you.