This is an unsigned Japanese sword with a blade length of 54.2 cm, featuring a straight hamon and a restrained, functional appearance. Based on its construction and style, the blade is attributed to the Edo period, reflecting the practical and refined workmanship typical of that era.
The sword is mounted in late–war Japanese Navy landing force fittings, with the saya fully covered in black leather, a feature commonly associated with combat use and field protection. The combination of an earlier Edo-period blade with late-war naval military mounts suggests a sword that was adapted for service use, offering both historical depth and strong military character.