I will give my 2 cents also.

I saw this or similar dagger before, I believe at the SOS or MAX, and what I noticed then was how small the swastika is on the pommel, and it looks also like it's not centered.

The blackening on the scabbard is not pre 45 IMHO, it looks like the paint they use to hump up the Teno's, it would be a good specimn for me to check with my XRF machine to see wich components it has.

It was said that the lack of quality of the pommel is because of corrosion, but that would also effect the paint thats on it, and it did not.

The grip used on this one closely resembles, or is the same, as the grips that were floating around some years back, and I believe that there was on big dealer that had a couple.

And then the biggest mistery; why does it only have one side? Who would wear a dagger that only has one side to show? And have such crude finish?
I think that IF this is pre-45, it most likely was a display piece of some kind, maybe in the Eickhorn window or somewhere.

Just thinking out loud.