Ordering Number: AS26277Katana in Shirasaya (NBTHK Hozon Token)Signature: Bungo no Kami Minamoto Masayasu (also read as Masatomo)豊後守源正全(まさやす/まさとも)Shinto: Chujo Saku: Owari(We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku).This blade is ranked as Jyo Saku among the works of Bungo no Kami Minamoto Masayasu.Habaki: Single copper.Blade Length: 51.7 cm (20.35 in).Curvature: 0.9 cm (0.35 in).Mekugi Hole: 1.Width at Base (Motohaba): 3.00 cm (1.18 in).Width at Yokote: 2.06 cm (0.81 in).Thickness of rim (Kasane): 0.75 cm (0.30 in).Sword Weight: 550 g.Era: Around the Kanbun era (1661–1673), Edo period.Shape: A solidly built blade with a wide mihaba, thick kasane, and a slightly broad kissaki.Jigane: Well-forged ko-itame hada producing a refined and high-quality jigane.Hamon: Beginning with gunome-midare from the hamachi. The blade has been polished in the sashikomi style, allowing the distinct hamon to stand out beautifully.Features: Bungo no Kami Minamoto Masayasu was a descendant of Itakura Seki Masatoshi of Mino Province. He was also known as Ishida Zenzaemon Masayasu and signed his works with inscriptions such as Bungo no Kami Minamoto Masayasu, Bishū no Jū Zenzaemon no Jō Masayasu, and Ishida Zenzaemon Masayasu Saku. He later moved from Mino to Owari, where he settled in Nagoya and produced his swords. His blades are reputed for their excellent cutting ability.Historical Background: The Kanbun era (1661–1673) marked a transitional period in the early Edo era when peace had become firmly established. In addition to a series of major natural disasters, including large earthquakes, the famous Date Disturbance (Kanbun Incident) took place in the Sendai Domain. During this period, nationwide land surveys and improvements to urban infrastructure also progressed.Aoi Art’s Comment: It is said that during the Kanbun period, the market for swords became increasingly difficult as Japan had entered an extended era of peace. As warfare disapp

Ordering Number: AS26277Katana in Shirasaya (NBTHK Hozon Token)Signature: Bungo no Kami Minamoto Masayasu (also read as Masatomo)豊後守源正全(まさやす/まさとも)Shinto: Chujo Saku: Owari(We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku).This blade is ranked as Jyo Saku among the works of Bungo no Kami Minamoto Masayasu.Habaki: Single copper.Blade Length: 51.7 cm (20.35 in).Curvature: 0.9 cm (0.35 in).Mekugi Hole: 1.Width at Base (Motohaba): 3.00 cm (1.18 in).Width at Yokote: 2.06 cm (0.81 in).Thickness of rim (Kasane): 0.75 cm (0.30 in).Sword Weight: 550 g.Era: Around the Kanbun era (1661–1673), Edo period.Shape: A solidly built blade with a wide mihaba, thick kasane, and a slightly broad kissaki.Jigane: Well-forged ko-itame hada producing a refined and high-quality jigane.Hamon: Beginning with gunome-midare from the hamachi. The blade has been polished in the sashikomi style, allowing the distinct hamon to stand out beautifully.Features: Bungo no Kami Minamoto Masayasu was a descendant of Itakura Seki Masatoshi of Mino Province. He was also known as Ishida Zenzaemon Masayasu and signed his works with inscriptions such as Bungo no Kami Minamoto Masayasu, Bishū no Jū Zenzaemon no Jō Masayasu, and Ishida Zenzaemon Masayasu Saku. He later moved from Mino to Owari, where he settled in Nagoya and produced his swords. His blades are reputed for their excellent cutting ability.Historical Background: The Kanbun era (1661–1673) marked a transitional period in the early Edo era when peace had become firmly established. In addition to a series of major natural disasters, including large earthquakes, the famous Date Disturbance (Kanbun Incident) took place in the Sendai Domain. During this period, nationwide land surveys and improvements to urban infrastructure also progressed.Aoi Art’s Comment: It is said that during the Kanbun period, the market for swords became increasingly difficult as Japan had entered an extended era of peace. As warfare disapp