This is a very rare Tenkei Mikura-jima Tsumuge (boxwood) root grain, Minase-style calligraphy, moriage (raised) koma (shogi pieces). I was drawn to the striking grain and purchased it for display. I have never used it since I bought it. I am selling it because I own several sets of moriage koma. The glass-partitioned viewing Paulownia box in the images will be included. Tenkei was the mark used by the second-generation Kosho Sato, a leading carver in Tendo and a traditional craftsman, during a very short period before he became the second-generation Kosho. Kosho's one-character carving is famous for being used in professional shogi matches in the NHK Cup. However, "Tenkei" moriage koma were produced in extremely small numbers, and it is very difficult to find works in good condition, making this a valuable piece. The viewing case at the time of production is described as having tiger grain and tail-like grain. I am not very familiar with the strict classifications of wood grain, but I am listing it as root grain (root grain mixed with tiger grain) based on its appearance. Currently, it is becoming difficult to obtain such beautiful Mikura-jima Tsumuge that shines like a jewel. Please consider this rare koma, which is expected to become even more difficult to obtain in the future, at this opportunity. Please understand that this is a used item and only purchase if you accept this condition. * Please note that if it sells elsewhere first, this listing will be removed.