Exactly, my dear Mr. Sergej. And the engine is Siemens - Halske SH 14A. 
Is it connected with the Rogozarski Sim XI?
I’m unable to find any information in such aircraft,
I found an aircraft called Resava, but no pictures
or any information. I think we need one more hint
to solve this.
So sorry for my protracted silenece, my dear Mr. Sergej, but – like you ! - I am literally overwhelmed with certain professional obligations in these days. Yet, I hope that I will be free as a bird very soon. However, certain additional elucidations will be available. 
No, my dear Mr. Sergej, “our” airplane is absolutely unconnected with the Rogozarski SiM 11. Furthermore, “our” machine is not a product of the Yugoslav airplane industry. Actually, it was constructed and tested in a neighbouring country to ex –Yugoslavia.
I hope it’s the DAR-6A or the DAR-9 the follower of the first one,
if not I’ve no idea where to look for…
Alas – it is not, my dear Mr. Sergej. However, there is a plethora of other possibilities. You know, our mystery machine has Hungarian ancestors.
I looked to all neighbors countries, in first I only found the Weiss Manfred Aircrafts, but non of the was mentioned with a SH-14A. And somehow I stumbled on the Szegedy M-21 Harag and here is even a engine cover:http://www.freeweb.hu/horac/Rajz/M-21_rajz.jpg
Yes, my dear Mr. Sergej: [b]Szegedy M-21 Harag /b, one of the world’s best aerobatic machines before the WW2, capable to outperform even the famous Bücker Bü 133 Jungmeister actually was our mystery-airplane! That rare snapshot with late Hungarian master-pilot Tasnádi “Nádi” László in attendance represents a third - until now unpresented - photo connected with this utterly rare and unduly forgotten type of aircraft. My sincerest congratulations! 
And now, my dear Sir – it is your well deserved turn again!
Thank you a lot Librarian!
After quite two weeks here’s a new aircraft:
Even if only for a short time…
Oh, this really is a true rarity, my dear Mr. Sergej - Weserflug We 271. Here is a more detailed account about this highly intriguing machine:
Yes, you are right!
The German hydro aviation has still some less popular pieces,
maybe something we could change.
It’s your turn, Librarian!
You can count on my humble assistance, my dear Mr. Sergej!
However, before that we shall invigorate a quantity of other undeservedly elapsed pieces of aircraft history. For example, this one:
Incredibly, but this quite outdated airplane was in active service even in 1943! 
Vickers Wildebeest? or is it the Baffin?
Alas, the answer is – no, my dear Mr. Kiwimac. You see, unlike those previously mentioned airplanes “our” machine actually has a twin-row air-cooled radial engine.
Maybe it’s a Danish Hawker Dantorp?
Absolutely, my dear Mr. Sergej – Hawker Dantorp, that half-forgotten, shore-based torpedo bomber of British origin, with both float and wheel undercarriage, was our mystery machine. My sincerest congratulations.
Please, carry on – it is your turn now!
Thank you Librarian,
Here is an aircraft, that fascinates me for a long time.
McDonnell XP-67
Yes, you’re right!
Fast, heavily armed and nice looking,
Your turn!
Hi!
My first post on this forum, even though I have been watching for some time.
Anyway, my guess is this: Westland Wapiti in Indian Air Force Markings.