Below are two shibuichi (四分一)ô-kozuka. Shibuichi is a composite metal made of three parts copper to one part silver. The top ô-kozuka has an inome (boar’s eye) carved through the plate near the base. It is lined with silver. The shibuichi plate is delicately carved with a wild boar with silver tusks. Does anyone out there see the pun? The mouth of the kozuka has a shakudo plate as a decoration.
The second ô-kozuka’s shibuichi plate is covered on the front with a very fine nanako. The decoration is that of a bow string made of shakudo and its bobbin (holder) that is made of silver and shakudo. It is very tasteful and beautiful.
The final kozuka is one of normal size to be used as a comparison piece.