文金 Mongane / Patterned Metal

What is Mongane in Japanese Katana terminology?

This refers to the metal fittings that are attached as decorations in the middle of the belt holder (Obitori) when it is a metal fitting or chain. In the case of a belt holder made of leather or similar materials, a fitting called ""Nanatsugane"" is attached. These fittings not only serve a decorative purpose but also add strength and durability to the belt holder. They are often intricately designed and can be made from a variety of metals.