Hello,this could be a badly struck mark of J. Kurz from Hanau. See here under Kurz
http://www.925-1000.com/Fgerman_hanau_marks_01.html" onclick="window.open(this.href);return false;
to compare. The other marks could be import marks. Can't really say I am seeing much here. A better pic after some cleaning might help. Best wishes, Bahner