Has there not been several nskk "prototype" daggers popping up over the years ??? all looking different from each other.
even for a prototype ,the quality is less than one would see.

"o.k. boss ! , this what you wanted ?"
the logo would state it to be the early one (found in the sleeve diamonds).
Now might be a prototype rendering (very first stage) for a design for the yearly dagger compaction. or a designer's apprentice "class project".
got my doubts. jeff