Possible Kurihara Nobuhide

I made a recent discovery of a Japanese blade which had been hidden in a closet for several decades. This is my first blade and initial opinions are that it is an authentic piece. Thoughts?

AttachmentSize
Nakago11.02 MB
Nakago21.17 MB
Blade11002.28 KB
Blade21.08 MB
Blade31.14 MB
Blade41.57 MB
Blade51.13 MB

Looks nice! No opinion as to

Looks nice!
No opinion as to authenticity and such.

Pete