Japanese Armor Society Forum

Title: Nakamura kōgatana shūshikan kitaku
Author: Tetsuo Nakamura
Publisher: Nakamura Kōgatana Shūshikan, 1999
Language: Japanese
Illustrations: Color pictures and black and white pictures
Other: 112 pages, 30 cm by 21 cm, softcover
Topics: Documents, Kabuto, Katchū, Menpō, Nihontō, Tōsōgu
ID: B0109

Catalog that shows the collection of Tetsuo Nakamura (who changed his name later to Tetsuo Ii), as it is hosted in the Nakamura Armor and Swords Museum in Kyoto. Includes some famous pieces.

https://vimeo.com/147547693

I was wondering what 甲刀 Kōgatana with a long 'o' might be, as opposed to the more common 小刀 Kogatana (small knife). Some kind of special blade that is only used with Katchu, perhaps?

Then I realized that this exhibition was of both 甲 and 刀.