that's not a Bahnschutz buckle .
It's a Deutsche Reichsbahn officials buckle !
I'm searching for
special SA/NSKK/NSFK with maker marks
Link to my collection : http://www.warrelics.eu/forum/album.php?albumid=1175
looks good for a buried one.
What are the marks on the catch? Are they hand made or factory?
I thought these marks might have been letters