Well done! Yet another of your repaints which is simply great. The only thing I would change it the eagle (it was different than the modern one you used) and the color (it was probably grey).
I love almost all improvised armored cars (especially Spanish "tiznaos"), but Pilsudski's Tank is definitely in my top five list.
As for the vehicle itself, according to the latest research, it was built on the chassis of a Büssing 5 ton army truck.