Daisho at last

[Ooitame]

Thank you @Jussi Ekholm for all of your research!

 

If you have the time, I would love to see Uchigatana Koshirae, to see what they look like from a historical and Juyo aspect? As well as, to compare my koshirae.

[Brian]

Agree with Jussi. Koshirae is the main feature used to determine a daisho as this conclusively proves they were owned/carried together.
(Obviously excluding those put together later for display.)

[Baba Yaga]

Tread lightly on the outliers, what is most common, is "sometimes" the most probable. 

[Ooitame]

Ok, my question is how to prove provenance? I am not sure if swords were often kept in a list of owners?

How common is it that blades passed downed were documented, except swords like Masmune, Norishige etc...

[Baba Yaga]

14 hours ago, Ooitame said:

Ok, my question is how to prove provenance? I am not sure if swords were often kept in a list of owners?

How common is it that blades passed downed were documented, except swords like Masmune, Norishige etc...

 

This's like trying to discover ones own nationality and blood line before DNA testing. Until nondestructive scientific testing becomes the norm, it's best guess. I've seen many swords with papers have a 100 year history span attribution. 

[Baba Yaga]

I did a quick search of AOI in Japan and found A Dai and Sho in Shirasaya (NBTHK Tokubitsu Hozon Token) Tsushima Kami Tachibana Nyudo Tsunemitsu 

Also found Tsuba as Dai Sho and Unrelated papered smith swords with unsigned none papered match Koshirae as Dai Sho.

 

Is the word Dai Sho the same meaning as Daisho in "collectors" terms?