Although both blades are by Naotane, that of the long sword (katana) is made in the Bizen style, while that of the short sword (wakizashi) is made in the Sōshū style. The engraving on both is attributed to Yoshitane, who decorated many of Naotane's blades.
Inscription: Inscribed on the obverse of the blade: 造大慶直胤（花押） (Taikei Naotane tsukuru (kaō)) (Made by Taikei Naotane [monogram]); on the reverse: 天保十年仲春 (Tenpō jū-nen chūshun) (Tenth year of Tenpō , second month); also on the obverse: a Buddhist guardian king inside a hitsu; above that, eleven Sanskrit characters; on the reverse, another Buddhist guardian king inside a hitsu; above that, thirteen Sanskrit characters. Inscribed on the sword guard (tsuba), on the obverse: 長州萩住金子十郎兵衛 (Chōshū Hagi no jū Kaneko Jūrōbei) (Kaneko Jūrōbei, residing in Hagi, Nagato Province [present-day Yamaguchi Prefecture]); on the reverse: 幸仲作 (Yukinaka saku) (Made by Yukinaka).
Brayton C. Ives, New York (until 1891; his sale, American Art Galleries, New York, March 9, 1891 and following days, to Walters); W. T. Walters, New York (1891; his gift to MMA).