I have learned a lot from reading this forum, now that I have joined, I would like you opinion on this badge. This question have been posted on other forums , but it 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!