WW2 Polish 2nd Corps Patch “Mermaid” Bullion Thread

Shield-shaped badge made of red material. around the shield embroidered with a silver frame, in the center of the shield there is  mermaid holding a sword and a shield made with a silver thread (coat of arms of Warsaw)

Insignia of the 2nd Corps of Polish General Anders, worn on the left sleeve of the uniform.  Good condition as on photographs.