Object Title

Sword (katana)

Sword (katana)



Object Number



Presented by a private donor, 10 July 2002. Formerly part of the collection of her husband.

Physical Description


The blade is shinogi zukuri with an iori mune and a high, deep shinogi. The hada is ko itame and there is utsuri. The hamon is a low choji on a chu suguha base. The boshi is midari kome with deep kaeri. The tang is suriage with three drilled holes and a kiri tip and kiri yasurimei.Mounts

In shirasaya with the army mounts preserved.


Dimensions: The nagasa is 652mm, the sori is 13mm, the length of the tang is 160mm, the width at the machi 31mm, the width at the yokote is 25mm, the length of the kissaki being 39mm the length of the hilt being 321mm, the length of the scabbard being 708mm and the overall length of the shirasaya being 939mm. Weight: blade 0.815 kg, shirasaya 0.414 kg.

Inscriptions and Marks

Signed with a two character signature Sadayuki. See also notes about a surrender tag.


Places Japan


Accompanying this sword is a surrender tag in the form of a strip of torn cloth on which is written in black ink:' Guni taisho Omachi Koyu' (Military surgeon General Omachi Koyu). Deryk Ingham states that this sword was originally acquired by a US dealer from a Chinese collector. Having had the blade polished, the US dealer then sold it to a European dealer who then sold it to Deryk Ingham. It was stated by the US dealer that there were papers for this sword but these never materialised. There are several possible Sadayuki's that this smith might be. Deryk Ingham thought it might be a member of the Hojoji group working in Musashi around 1680 (Hawley SA444) and normally signing Hojoji Tachibana Sadayuki. An alternative is a Bungo smith (Hawley SA434) the son of a Tokiyuki who is thought to have used a two character signature. See also Nihon To Koza, Vol IV, Shinto, translated by Afu Watson, p. 309 et seq. Cleaned and oiled March 2006