it's elementary to say the catch looks like a known Fake ...........
Therefor the stamp is also 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
Didier, yes mate the markings are fake and as Markus has pointed the catch is one from the known fakes
I supposed well