The subject broadsword Danbira wakizashi is perceived an additional inscription in 1642 (note) from a test cutting performance by a Samurai "Ishihara Kos□hikonomasa" that reads, "On the 5th day of March, Kan'ei 19th year, at Edo Castle in Musashi Province,cut through at armpit moreover down 5-sun (nearly 15cm) into clay mound.
The sword workmanship is likely influenced by the works of the Nanbokuchō period's Sōshū tradition. The configuration with a upper point curvature and a groove carved along the blade, indicates that it was a special order, likely intended as a companion sword to a long Tachi, with a focus on excellent cutting performance. The blade is forged with a streaming Masame grain near the cutting edge to enhance its cutting ability. The Hamon of "Kanefusa midare", typical of late Muromachi period Mino swords tradition, is richly textured with prominent lines of Nie of grainy martensite, giving it a wild and rustic appearance.
Based on its distinctive style and the characteristics of the tang, the sword has been appraised as the work of the famed smith "Kanefusa" 兼房 from the late Muromachi period.