Letter opener? I've got a US Army saber letter opener similar to that.
I don't think that's what this is. I read an article about the child's miniatures that the Japanese made during the war.
I'm not 100% that this is what this sword is... but I don't think it's modern.
Here is one example in use.
Searching for anything relating to, Anton Boos, 934 Stamm. Kp. Pz. Erz. Abt. 7, 3 Kompanie, Panzer-Regiment 2, 16th Panzer-Division (My father)
I like it very much!
Ray skin handle, silver wire winding, nickel plating and lots of details witch indicates it's a quality item.
What a nice piece ! representing a Kyu-gunto ( early army ) sword , i really like it
We are the Pilgrims , master, we shall go
Always a little further : it may be
Beyond that last blue mountain barred with snow
Across that angry or that glimmering sea...
I was impressed how well it was made. The blade is even of the quality I would expect in a normal sword.