Hi Srecko,
and another belated solving of a riddle by lucky circumstances
The first plane in the third row is a Heinkel HD 25. Never thought that this could be a Heinkel design.
The only photo of that plane (here in Japanese service), that I found online is here in post 38 (third photo) about halfway down:
http://www.ww2aircraft.net/forum/air...s-10759-3.html
It needs a while to load that page.
I have found a photo of that plane in a book in the same position as your photo, so if you need a scan, just give me a call
Have a nice weekend,
Robert