Hello WnmN, did you do a blacklight test (especially between the strands of the lower acorn)?
What I can se only from the pics it looks like a nice, original LW dagger portepee with (very small) traces of wear and age. Especially the wearing traces and certain features I do know from doubtless original ones reinforce my believe that it is an original one.
Regards,

wotan, gd.c-b#105

"Never look for sqare eggs" as a late owner of an original FHH-dagger used to say.