Thank you Michael,
Yes, I bought it from a German gentlemen, it is known that Germans are generally somewhat more precise in detail.
BTW did you ever see such a messer for single hand use.
The longer 2 hand Messers are known, but here the grip is a little longer for single hand- or 1 1/2 hand use.
probably this extra length is needed only to counterbalance the light blade enough, i/o a pommel/counterweight.
best,