While I often see Minpei ware dishes, I don't often see sake cups. This item was likely originally a sencha tea bowl, but it can also be used as a guinomi (sake cup). It's hexagonal with chamfered sides, and the design is molded. I believe it's quite a rare piece. I received it from a sake cup collector. There are cracks throughout. Diameter: Approximately 6.8cm Height: Approximately 4.9cm It has a slight tilt. The mouth is round. The images are a bit dark. Sizes are approximate. The actual item may differ slightly in color from the images. As it is an old item, there are age-related scratches and stains. Please examine the description and images carefully before purchasing.