Reproduction WW 2 German u-boat cap badge.
Not sure which u-boat used this device.
Stamped brass with 2 prongs on back for fastening.
Size is 2 3/8 x 1 11/16 inches.
Listing is for one pin, photo shows front and back.
Repro WW2 German U-boat cap badge u-? Kriegsmarine Sub Submarine