The pictures you posted are pretty bad but I think there is enough detail to make a judgement.
here is my opinion: The badge is a cast fake.
The eagle and wreath are not known types made by Juncker and your badge looks suprisingly similar to an Assmann 2nd type observer badge that is made from tombak with a nickel silver wreath.
Both the eagle and wreath look have quite weak details.
The eagle does not sit in the correct position on the wreath
The feather edge details are poor
I don't even think the badge is an unmarked Assmann badge with an added Juncker stamp
So not a badge I would want in my collection.
I think the box is a period original.
All the best
I agree with Doug. The badge is a fake based on a Assmann design. You can good see, that the rivets are complete wrong for a Assmann badge. Case is looking good based on this pics.
have to agree.