The Musashi Masamune is a tachi, measuring 74 cm (2 korai-shaku, 1 sun, 4.2 bun), and noted to have nearly all of the characteristics of Masamune's signature features; though it is debated that its o-kissaki is not that of his style, it is compared to blades made in his later career, which shows the transition of the Kamakura styles into the Nanbokucho era.