This is I suppose well know set of photos, which are in Laszlo Lavor collection or other people from Hungary. I suppse I have them too in my collection a I-15bis, and Ił-2. There was also T-28 on this exhibition too.
Some planes like I-15bis were captured on Stanisłwów airfield
see parts of my book where is one photo exacty of I-15bis plus PWS-26 inside inspected by Hungarian troops.
http://www.bellona.pl/files/85886_powietrzne.pdf
regards,
mw