Possible East German Army jacket

Hallo

I was given this jacket some years ago by a friend. I want to believe it is East German Army. The one photo shows the only tag in the collar and it says " K52" One photo shows the stencil mark on the inside pocket and the third photo gives a general view of the chest and pocket and shows the unidentified colour patch. Can somebody correctly identify it please ?

The color patch is an East German Association for Sport and Technology patch. So its not military but para-military.



That's a guy (kid) wearing the same type of shirt and patch.

https://en.wikipedia.org/wiki/Gesellschaft_f%C3%BCr_Sport_und_Technik

Thank you so much Mr. Darktrooper - now I know the identification of this jacket

Wrong forum. It has nothing to do with GWOT.