I have posted this badge before, but got no response, please check out the photos and give me your opinions. This one is mark on the rear center with “C. E. Junker Berlin”, a crescent moon, a crown, and an unknown mark. The pin has a T hinge and it is half flat /half round, it appears to have silver type patina (non- MAGNETIC) and I think pretty good detail. I know very little about these badges and any opinions would be appreciated!