WW2 Polish 11th Signal Battalion Beret Pennant

 A Polish pennant worn on a beret, showing a mermaid of the 2nd Polish corps and lightning. Used by the 11th Signal Battalion. 

 Smooth reverse,marked “ALP” (for Alpaca). Threaded nut with a spinner of the maker F.M Lorioli. 

Good condition as on photographs, covered in patina. `