The name "Soken" is primarily known as the artist's name (mei) of **Soken Mizuide (mizuide soken)**, a maker of tea ceremony utensils, mainly of Kyo-yaki and Kiyomizu-yaki pottery. The search results reveal the following information: Person: Soken Mizuide is a ceramic artist who creates various tea ceremony utensils, such as matcha bowls and mizusashi (water jars). Works: His works include matcha bowls like "Ninsei Hina Dolls," tea bowls like "Chestnut," matcha bowls like "Autumn Field," tea bowls like "Turkish Glaze Flowing Water Wheel," and tea bowls like "Hyakunin Isshu" (One Hundred Poems by One Hundred Poets), characterized by their vibrant colors and hand-painted designs. Reading: It is generally read as "soken" (although the spelling "Soken Mizuide" is also seen, it is likely the same person). Size: The size is 11.5 cm in diameter and 7.2 cm in height.