If I recall correctly, Poland used obsolescent SU-85 tanks in Berlin in 1945. I thought of that when I saw that such a vehicle was offered by Zvezda, but unfortunately no Polish markings.
Miniart does a kit with Polish dealas:
Polish SU-85 from the 13th Armoured Artillery Regiment and the units mascot in Germany, 1945.
SU-85M “612” of the 24 “Drezdeński” pas (Polish 24th “Dresden” Self-Propelled Artillery Regiment of the Polish 1st “Dresden” Armored Corps), these photos were probably taken in Lusatia/Saxony, April 1945.