Well that etch pattern with those bookends is known to be used in the period. All the parts appear to be right as well as fit well...
Having said that a couple things I see bother me a wee bit.
-It appears that the reverse lower crossguard has some scratches. Was a Gau stamped ground off there?
-SS F�rth examples were etched locally with the dedication in a secondary process. This one would have been special ordered at the factory.
-It appears that there are some grind marks on the blade between the maker mark and the etched panel, is this so or just cause the pic resolution ****s?
-Finally it would be interesting to get a micrometer on the blade and see if both sides were ground off and the whole thing re-etched. If someone did, they went to a heck of a lot of work to age that blade with a bent tip and all.