I've owned this buckle for over 40 yrs n been wearing for the past 30 yrs. I've only found one picture of another one with the TOTENKOPF SKULL n it was totally fake ! Is this one real ?? 

I think fake almost seems like a fantasy item. But I could be completely wrong. I would wait for more expiereinced people to make that call. 

fantasy item as that pattern did not exist.  You will see some crude skull and crossbones buckles worn by the Werewolves (google them) but this is not one of them.

It would not be RZM marked either.