There's two 50 pfennig notes for the DNS Satrup 50 pf note - with and without overprint.
Deutsches Notgeld 2 splits these issues: numbers 1168.1 and 1168.2
Numista currently only has one entry, the one with the overprint - and I'm not sure how Numista would like to organize this - should the 50 Pf note without overprint be its own note (as would be logical according to DeNG), or should 1168.1 and 1168.2 be contained in the same issue - in that case, the note without overprint should be added as a variant on the current issue.
Although, from my OCD, having a note without an overprint registered as a variant on a note with an overprint, jar quite a bit. But I guess one could just swap the main photo?