I apologize if this is the wrong place to ask, but what is this thing worth? What's the historical value?
That is an RAD dagger (Reichsarbeitsdienst or German Labor Service). The enscription translates: "Work Ennobles."
This subreddit isn't an appraiser's, but it might be a good idea to ask a more general question about the knife's origin or authenticity
It would be worth quite a bit if its an original but its likely a replica.
Its a RAD (ReichsArbeitsDienst) Dagger "Hauer".