This is an old Imari soba choko (noodle cup) from the mid-Edo period. It has a simple composition with a lot of negative space, and it's cute. There is gold repair. Search terms: Edo period, old Imari, soba choko, antique, old tools, tea ceremony utensils, folk art, Seto ware, Kutani ware, sake vessels, sake cups, guinomi (small sake cup)