A Second War Croatian Radio Operator & Air Gunner Badge with Case

Early good quality badge in silvered tombac, measuring 66.0mm x 50.0mm with good details and silvering. Vaulted, one went hole, pin back on reverse. Unmarked, but typical " BRAĆA KNAUS, Zagreb" example, sole maker of this badge. Slightly worn, in very extremely condition. Badge comes with “BRAĆA KNAUS, Zagreb”, marked case of issue, and badge fits perfectly into the case; to my knowledge no cases were made for badges, but this is most likely an example of privately made case for this badge.