Reproduction WW 2 German U-boat Cap Badge.  
U-552 Roter Teufel Red Devil.  
Commanded by Erich Topp. 
Made of brass with 2 prongs on back for fastening. 
Size is 2 1/4 x 1 1/2 inches.

Listing is for one pin, photo shows front and back.

Repro WW2 German U-boat cap badge u-552 Roter Teufel Red Devil Erich Topp