Height 8.5cm, mouth diameter 10.4cm x 12.5cm, base diameter 4.9cm
This is a four-sided tea bowl, which is unparalleled among Chojiro ware. However, it is relatively similar to “Okuro” in terms of the tone of the brownish-black yuzu, the pinch mark at the time of withdrawal, the mouth structure, and the base. It seems to have been Rikyu’s favorite, as the back of the outer box lid says “Rikyu’s favorite Chojiro ware Shiho Kuro Chawan” and the front of the same box lid says “Shikaku Chojiro ware by Rikyu, owned by Rikyu. Although Rikyu preferred a random appearance, the four-sided shape seems to have been his favorite, and there seems to be some commonality with the four-sided kettle that Rikyu preferred. Although the body is four-sided, the waist is stepped, the workmanship from the waist to the base is the same as that of a round tea bowl, the base is rounded, and the width of the helmet inside the base is cut out in a gentle whorl shape. The inside of the omensuke has finger marks on the four corners, as if they were rutted. The yuzukakari is thick, and makuyuzu appears on the outside of the four sides. The brownish black glaze has a hazy appearance, and there are large and small bubbles throughout.
On the back of the lid of the inner box, Fudakusai wrote “Chôjirô kuro shihô teacup, Kakudô mukiruri inscription, mukiruri zeisho tomo (flower stamp)”. It is assumed that the four-way black tea bowls after Ichiiri were probably based on this bowl, and it is accompanied by a handwritten note from a person who saw this tea bowl, which says that it was handed down from a person named Nanyu Kairo to Goto Saburoemon and then to Dou Soban, and then to the Chikusa-ya Hirase family in Osaka, and a list of the people who saw this bowl is also attached. It is accompanied by a letter from Matsudaira Fumai, who saw it.
