no from this pics it is a cast fake .........
I'm searching for
special SA/NSKK/NSFK with maker marks
Link to my collection : http://www.warrelics.eu/forum/album.php?albumid=1175
Doesn't look good. That prongs looks like more like one from a nickel buckle.
Just out of curiosity can you post pics of it in natural day light and maybe some closer pics?
Are all the cast SS buckles fakes?
I have doubts about the alu buckle above: I agree with others that it looks a cast alu buckle. Anyway better picts will let us judging it better.