A kozuka (knife handle) with its original blade, decorated with a stylised depiction of a castle wall. The wall surface is decorated with a Y-shaped stamped design, creating rough ishime (stone surface) patterns, followed by a row of roof tiles(?) in silver inlay. A tate-waku (rising steam) pattern perhaps symbolises clouds or moat water behind the wall.

Such sword fittings were created by low-ranking samurai in the Sendai Castle town as a means to make a living during the late-Edo period and shipped to other domains. As large amounts of these were sent to be sold in the far Ōgaki Domain, they are also known as Ōgaki kozuka.

The kozuka is part of a sword mounting and would be stored in a slot on the side of a katana's scabbard.