ID? 4ga Aluminum flare - "cbl" headstamp


#1

I have a 4 ga. aluminum flare shell (fired) with a notched rim on half the circumference and a small cbl headstamp. Who is the maker.
Thanks,
Bob R.


#2

It’s a german flare case, the maker is "Vereinigte Deutsche Metallwerke AG, Zweigniederlassung S