Is this a Chinese porcelain or Ko-Imari (old Imari) water cup? It has a thunder pattern on the rim, simple colored painting on the lower part, and a dragon design on the inside. In any case, it is an old item with slight insect bites on the inside, a sandy foot, and what appears to be a silver repair on the rim. Please check the condition in the photos. Diameter: 12.3cm Height: 9.2cm