Nice early all second type fittings. I have an identical dagger. Certainly it is interesting to see that Eickhorn had moved from the 1st type fitting & slant grip quite so early.
I have to wonder if some manufacturer`s had started production earlier than the "official" date.
I estimate that something in the region of $1600 (possibly more)has been added for the dedication
I don`t think so unless there were some interesting if not significant history that could be attached to the original owner.
Other than that it is somewhat over-priced even with a research file IMHO.