This is a large and very unusual Kagamishi (mirror maker) tsuba dating to the Muromachi Era. It measures 3.58 inches or 9.1 cm round. It is made of Yamagane and was constructed by joining together two relatively thin plates. This makes it strong yet light. It is comprised of two distinct designs that are separated by a ring of 70 raised nodules on one side and 83 on the other. The outer area of design between the nodules and the mimi is that of hexagons each containing seven raised bumps (similar to nanako). The inner portion of the surface of the tsuba within the nodules contains geometric line configurations resembling the design found on the back of a tortoise shell. This tsuba took an incredible amount of time, effort and skill to produce.
There is one area of very slight very old damage to only one side of the rim and other than that, this tsuba is in absolutely outstanding condition. This tsuba was just awarded Tokubetsu Hozon papers by the NBTHK and it would be an excellent Jûyô candidate in my opinion. It comes in a custom made fitted box with a custom made cloth cover. I did my best to photograph this tsuba but the photos do not do it justice as the new owner will find out. The papers will be forwarded to the new owner when received from the NBTHK.