The history is fascinating but the dagger doesn't appear to live to it.
I find extremely strange that a Japanese shogun will present a foreign dignitary with an Indian dagger.
Why not a Katana or a Tanto. Why not a Japanese fan with cranes a Mt. Fuji, why not some Japanese Maki-e or some Satsuma/Arita/Kutani ceramics?
Japanese are deservingly proud of their arts and crafts, so again, why present a foreign dignitary with an Indian dagger?!