Thank you dear Apophenia,
PZL Long-range maritime reconnaissance aircraft project. Poland,
Young constructors from PZL: Eng. Tadeusz Sołtyk, eng. Kazimierz Korsak
and Eng. In 1936, on his own initiative, Tadeusz Tarczyński developed a preliminary design for a twin-engine (two-seater?) Reconnaissance aircraft intended for long-haul flights by MDL. It probably had the name PZL "Żbik".
The project was submitted to the Navy. The proposal was met with interest,
but it was not implemented. The constructors, who were then involved in
the development of the PZL planes: "Sum", "Sokół" and "Wilk" and "Lampart", did not return to their own design.
According to [2] - PZL "Żbik" remains a white spot. The author remembers
the modeling plans of this plane sold in several stores in Warsaw during the occupation. They presented a very streamlined low wing with two in-line engines and a double tail by an unknown designer. However, the authenticity
of the plans sold was often questionable. According to some sources, the
name "Żbik" bore the design of the high-altitude reconnaissance or fighter
(and / or reconnaissance) PZL plane - high-altitude reconnaissance aircraft
from 1935.
[URL unfurl="true"]http://www.samolotypolskie.pl/samoloty/2391/126/PZL--samolot-MDL-dalekiego-wywiadu-zbik[/URL]