Ordering number: 15525
Katana: In Shirasaya (NBTHK Hozon Token)
Inscription (Mei): Unshu Ju Tadayoshi Tsukuru Kore(Mumansa Swordsmith)
Showa 46 Nen Nigatsuhi (Made by Tadayoshi of Unshu Province on February of Showa 46, 1971)
At our company, we categorize swords as Saijo saku (top quality), Jojo saku (excellent), Jo-saku (good), and Futsu-saku (normal) based on the skill of the swordsmith. This work is classified as Jojo-saku, signifying its excellent craftsmanship.
Habaki: Gold foiled single Habaki
Blade Length: 74.9 centimeters (29.49 inches)
Curvature (Sori): 2.5 centimeters (0.98 inches)
Peg Hole (Mekugi-ana): 1 hole
Width at the Base (Motohaba): 3.23 centimeters (1.27 inches)
Width at the Tip (Sakihaba): 2.44 centimeters (0.96 inches)
Thickness (Kasane): 0.77 centimeters (0.30 inches)
Sword Weight: 900 grams
Era: Showa 46th Year (1971)
Shape: The sword has a wide body with a solid kasane, strong sori, and an elegant elongated kissaki, representing a beautiful shape.
Jigane (Forging Patterns in Steel): The steel displays a finely crafted itame hada with a clear jigane pattern. A black band-like area, called jiage, adds to its beauty, reminiscent of the style of swordsmith Soshu Sadamune.
Hamon (Temper Pattern): The hamon exhibits a round gunome-midare pattern extending from the blade’s base to the tip. Beyond the midsection, it transitions into a straighter hamon with smaller gunome-midare patterns, and the boshi forms a suguha pattern. This work is reminiscent of Nagamitsu, with fine nie activity seen near the blade’s edge and in the middle section.
Special Features: Tadayoshi was born in Taisho 12 (1923) and began learning the craft from his father, the first-generation swordsmith Kawashima Tadayoshi, at the age of 15. The following year, they were jointly designated as an Intangible Cultural Property of Shimane Prefecture in the Japanese sword section at the Japan Sword Museum. Subsequently, he received awards, including the Excellence Award and the Mainichi Shimbun Company Award, and ultimately won the No-Authentication Award. His splendid jigane, characterized by a band-like jiage, exhibits a dynamic and vibrant appearance. This sword is particularly outstanding, with about 10 centimeters of the original edge remaining. It is believed to be modeled after the work of Bizen Nagamitsu, with a hamon pattern that closely resembles Nagamitsu’s and features a suguha pattern in the boshi. We highly recommend this exceptional work by Kawashima Tadayoshi.
NBTHK Hozon Token paper
Aoi Art estimation paper: Whole Oshigata by Tsuruta Ayaka