T-34/85

The T-34 was a Soviet medium tank which had a profound and permanent effect on the fields of tank tactics and design. It has often been described as the most effective, efficient, and influential design of World War II. At its introduction, the T-34 possessed the best balance of firepower, mobility, protection and ruggedness of any tank.

With its the 85 mm L/51 M-44 (Or ZiS-S-53)

Photo is taken in German's Panzermuseum Munster!