Hi mr Aurel, this luftwaffe dagger has a WKC scabbard which you can tell by the single side screw and the oval opening of the scabbard. Only WKC did this. All other producers used a scabbard opening like the one shown in the picture below. The blade seems to be cleaned since there is almost no crossgrain visible but that could also be because of the pictures. The dagger parts are all original so if it is worth buying all depends on the price.
The seller ask 450€ for this dagger; It is a good price, or should i pass for a better piece?
I would not pay 450 euro for this dagger.
Considering its price the condition of the blade should be very good, this one has almost no crossgrain left ( and a Scabbard that is not a standard Holler.