This is a rare sake cup from the Suizaka hand. Looking at the inside, there are cracks throughout. If used as a sake vessel, stains will seep into the white porcelain, creating a beautiful appearance, offering the enjoyment of "growing" it. There is a slight possibility it's from the Qing Dynasty, but either way, it's a highly rare sake cup. Please check the photos for a small chip (about 1mm) that has been repaired. Dimensions: Approximately 36mm high, 63mm in diameter. Thank you very much.