My buddy owed me $30 bucks so instead of giving me the money he gave this german knife, now I see these things all over the place so how do you tell if these things are real? It looks like all the other ones I seen, however there is no marking on the blade, I thought the blades were all marked. The only mark I see is on the fob type thing which has an eagle on it and underneath it has the letters SPQR. It is obviously missing a piece that gets screwed into the knife handle but if its real I should be able to find a replacement I think, if its fake I wont even worry about it. Any clues?? Thanks for the help!!