Unfortunately - no, my dear Herr Major: this is not the PZL 12. However, this airplane definitely is tightly connected with certain „Eastern” countries located on the Balkan peninsula… 
looks like a Westland “Lysander” army co-operation aircraft. With very short take off and landing characteristics, it could deposit agents in occupied territory with ease…
The wing doesnt look like it and the insignia (I think) points to Yugoslavia if im noy wrong.
“Kraguj” with a British-made Bristol Pegasus air-cooled radial, my dear Mr. Yurek? No, definitely not. 
And yes, my dear Mr. B5N2 – it surely belongs to the very same class of the so called Liaison aircrafts, like its renowned British counterpart, the Westland Lysander. The only problem is that this machine we have here (photo taken at the Batajnica airport near Belgrade, back there in 1949, while in use by YAF) was produced in … Bulgaria.
Is this thread dead or just sleeping?
This aircraft is a LWS-3 Mewa.
Yes, you are right, my dear Mr. Sergej – this thread is a little bit sleepy, but I think that with your valued support we will have a breakthrough!
And no – our mystery airplane is not the LWS 3 – Mewa. But without a doubt it has a very strong “family ties” with that eminent machine.
I was too overzealous.
Than it had to be the KB-11A with an
PZL Bristol Pegasus XXI engine.
Nice to see you again here.
Thank you for your kind words, my dear Mr. Sergej! Yes – this time you are absolutely right! Our mystery flyer was the [b]Kaproni-Bulgarski KB-11 Fazan /b, equipped with a license-built PZL – Bristol Pegasus XXI (835 HP) and a genuine Bulgarian KB-Kazanlik type of propeller.
Thirty airplanes have successfully served within different units of the YAF until 1958. Unfortunately, not a single machine survived the official decommissioning. 
It is sad that so many historical equipment were simply scrapped.
Just imagine a K-Wagen or a Tsar-Tank in an museum.
My offer:
Indeed, my dear Mr. Sergej. Alas, we cannot do anything about that sad verity…
In the meantime, I think that I have the answer for your enigma: Mitshubishi J8 M1 Shusui.
This is not the Shūsui.
Oh, my Lord, than what we have here? Perhaps the Yokosuka MXY 8 Akigusa,unmotorized training glider version of the J8M Shusui.
That’s the right answer!:mrgreen:
Splendid, my dear Mr. Sergej! So here is another one: do you recognize this tiny flying oddity? 
This is S, S like Sparka, made by Bolchowitinow.
Fast close-range bomber.
Well, it seems to me that we are gaining a momentum here, my dear Mr. Sergej!
Yes, our mystery plane was the [b]Bolkhovitinov S /b - a high-speed close-support bomber. It combined power of twin-engine aircraft with low drag of a classic single-engine scheme, as well as the unique electric control system that included remotely controlled MGs in the tail section.
Your turn again!
Here is the next flying questionmark.
What a magnificent tempo we have today, my dear Mr. Sergej – yes, I like that Fokker D.XXIII very much as well!
Your right again!:mrgreen:
Please carry on.
