These are sake cups with the names of the five breweries of Nada Gogo (Nada Five Villages) on them. Kiku-Masamune, Sakura-Masamune, Sawanotsuru, Ozeki, and Nihon-Sake. Each seems to have slightly different colors and sizes. I received these as a gift, but I don't use them, so if anyone would like them, please let me know.