German helmut metal reproduction Luftwaffe new in sealed bag

Has decals of a black, white and red shield and a eagle has a symbol in his claws. It is in the original bag it came in. It has a number on the bag a model # maybe not sure it is 87697. And inside the Helmut in the liner it says: Baumuster Helsler. Berlin C2 Hersteller 10/ F.