Show your pre-war car

Unknown car.

Unknown car.Hello! This photo was taken probably in 1930s in Poland. The car belonged to my great grandfather (in a passenger seat) and his friend who used it to drive visitors to the health resort called Iwonicz Zdrój. Sadly the car was confiscated by the army when the WWII started.
I would love to know which car model was that. Can you help me? Thanks!

Author: Joanna Monday, 04 December 2017