I could be wrong, But I am pretty sure it is an early reproduction. I compared the blade to one I have and it is identical. The dagger even has the same white grip as mine. Mine has not been "aged" so it is in excellent condition. But, it is a reproduction I purchased in Warsaw in about 1994. I found a photo posted here.
If you look at the third from the left, it is the same model.
I took down the dagger and compared the blades and every swirl and the placement are identical.
To me,it appears some one did what the Poles have historically refused to do, put Borowski's name on a reproduction.
I would like to see a good photo of the makers mark.
Jim
Description: Comparison