I always try to stay away from those special etched/engraved items because 99% are faked. So I also do not like to comment them. But I have to admit that this one looks very well and period done. There are several points in the inscription which personally did convince me. Nice.
And the dagger itself is out of discussion a good looking, untouched one.

wotan, gd.c-b#105

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