I photographed this 37mm Anti-tank gun Pak 36 at the Imperial War Museum Duxford during a trip to England in 2008.
When the Germans occupied Czechoslovakia in 1938 they continued to produce the Czech Skoda 37mm Kanon as the German 3.7cm Pak 36
After the war, the Soviets adapted this design to produce the JVK 32 Anti Tank Gun