Remember that time on the old forum when a native German speaker told you that this is a load of bunk? Good times.
Also why would an American undercover in the Soviet Union be given a secret message in German?
Psssst....John....Anybody can claim to be a native from any country and claim they know what two words mean.... ( in fact a secret agent would employ such a statement to discredit something they did not want revealed)
The signature of "Gut Schieffer" doesn't even make sense.... ( Have you ever heard of someone with the name "Gut")
That "signature" was simply a way of congratulating Lee Oswald ..... They knew that Lee knew a little German and deduced that he would recognize the message, but the Russians wouldn't have guessed that the "draft card" was only a clever way of communicating a message to Lee....