This is an authentic WW2 Nazi Germany Kriegsmarine M35 Sports Shirt Eagle Insignia. It was designed to be sewn onto the front center of a standard military physical training (PT)/sports shirt.
Description:
Produced using the "BeVo" machine-weaving technique in long, continuous rolls, which were later cut into the semi-circular shape seen here before being affixed to the uniform. It features the national emblem (Hoheitszeichen) consisting of a stylized eagle with outspread wings holding a wreathed, canted swastika. The emblems were service specific as indicated below:
Heer (Army) - Black thread on a white/cream canvas backing.
Kriegsmarine (Navy) - Blue thread on white/cream canvas backing.
Measurements (approximate):
Length - 9 1/2"
Height - 5"