The helmet was found in Stalingrad in the place of Orlovka, this is the northern cauldron of the 6th army. The helmet was found in a trench during the January 1943 battles. The helmet has been refurbished and painted. The helmet depicts the Madonna of Stalingrad, a drawing by the German military doctor Kurt Reuber, made in coal on the back of a Soviet school geographic map on the night of December 24-25, 1942, surrounded by Stalingrad during the final stage of the Battle of Stalingrad. Preserved in the Kaiser Wilhelm Memorial Church.
More about Stalingrad Madona -https://en.m.wikipedia.org/wiki/Stalingrad_Madonna
More photo Stalingrad Madona - https://www.google.com/search?q=сталинградская%20мадонна%20коваля&tbm=isch