Ryujin Swords

Shinsakuto katana by Seishinsi Sadatoshi

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Period: Heisei (January 8 1989 to present).

Mei: Seishin Sadatoshi saku in katana mei. The inscription on the reverse side says that the sword was made in May 1989.

Sugata: Shinogi-zukuri, tori-zori, iori-mune.

Overall length: 37.20 inches (945 mm)

Nagasa: 28.98 inches (736 mm) long.

Nakago: Ubu, 8.23 inches (209 mm), ha agari kiri-jiri, one mekugi-ana. The yasurime are sujikai.

Kissaki: Chu-kissaki, 1.46 inches (37 mm). O-maru boshi with some kaeri.

Moto-haba: 1.27 inches (32.30 mm). Moto-gasane: 0.27 inches (6.90 mm). Saki-haba: 0.84 inches (21.30 mm). Saki-gasane: 0.26 inches (6.70 mm).

Sori: 0.81 inches (20.5 mm)

Hamon: Notare-midare with ko-ashi

Hada: Ayasugi, typical of the Gassan school.

Blade condition: Excellent. In good polish with only minor scratches. No fatal flaws and no cracks.


The tsuka is fully wrapped in samekawa, not panelled and has a tsumami-maki binding. The tsuba and the fuchi-kashira are of grasses by the riverside, whilst the menuki are of dragonflies resting on stones in the river. The saya is laquered, using urushi, in Kuro Ishime-nuri.

The tsuba, menuki and fuchi-kashira were made and signed by Ford Hallam, a highly respected tsubashi who trained in classical Japanese metal arts. The steps in making the menuki can be seen here. One of Ford's tsuba will be on exhibition at the Okura Shuko Kan Museum in Toranomon, Tokyo, from June 13-July 25 2010.


Seishinsi Sadatoshi was born Hiroshi Kojima in 1929. He started making swords in 1941 and is listed in the Gendai Toko Meikan on page 136. In 1968 he became a student of Sadashige of the Gassan school.

A superb shinsakuto, razor sharp - one of the sharpest that I've handled - and in top-notch koshirae. Very good value for money. Would suit either a collector or a martial artist who wants a superb handmade sword.