Tsuba, late 19th century (CH 18342099)

At the center is the nakago-ana, an opening through which the sword passes, with remnants of sekigane (plugs added to fit the tsuba to a sword) made of shakudo (a soft copper and gold alloy). Surrounding this is the seppadai, a flat oval area that is migaki (burnished). On either side are ryō-hitsu, openings for the kozuka (utility knife) and the kogai (skewer tool). Both are hangetsu-kei (half moon) in shape.