Cloth Seal, Austro-Hungarian Empire, Bunzlau

Cloth Seal, Austro-Hungarian Empire, Bunzlau, Image & Found by Mlýnek Karel.
Found near the city of Hradec Králové, Czech Republic, 14mm.

N ..... 5 / BUNZLAU / ? . 60 // missing, trace of a stamp on rivet stub (cloth weave imprint on reverse of rivet disc

"The German name Bunzlau can refer to:
Bolesławiec (Bunzlau) in Poland
Mladá Boleslav (Jungbunzlau) in the Czech Republic
The former city Stará Boleslav (Altbunzlau), now part of Brandýs nad Labem-Stará Boleslav (Brandeis-Altbunzlau) in the Czech Republic." Wikipedia.

Probably the Austro-Hungarian Empire arms on the rivet stub. See BSG.CS.01259.