From around the internet.  Genuine war period photographs, good for uniforms/insignia reference:

https://m.facebook.com/photo.php?fbid=2757448944515732&set=a.1998985150362119 http://blitzandthebeauties.blogspot.com/2017/?m=1  

Dear all. I'm new in this field and I know that I have to do my initial research on these things::) However, I need your prompt advise, whether these badges are real of copies? The seller couldn't (or did not want) to confirm it's origin.  Many thanks in advance.        

Thank you very much.... I purchased a collection approximately five years ago but I left overseas for my DOD Civil Service job but since I returned... I have been going through it being surprised what I find....this being one of them.    I am amazed at what these pieces sold for and are listed.  I only have this one piece..wonder if one needs this to make a pair.

Thank you, it’s a shame on the name, I just want to know who wrote this, as they seem to be decorated, information via the photo.

The writing on the back is: "Meinem lieben Vater Meinhard zur herzlichen Erinnerung - Februar 1941" (for my dear father Meinhard as a cordial memento - february 1941"). Unfortunately I can´t decipher the name (or place name) written on the front of the postcard.

Thank you! 

Hi Edelweisse, Nice piece of CNAC insignia!  And as you've discovered, fairly scarce.  Here are a couple of threads on this site regarding CNAC.      

Also, the eagle decal is Army, not Kriegsmarine, which would be yellow.   Steve 

I think so...yes

Hello, I found this up for auction, and noticed it was signed, but I do not recognize the person in the picture. Do any of you? It would also help very much if some one could help translate the backside of the photo. Thank you.

Is it East German?  I appreciate the information.