Some sources state that the two in Berlin in 1945 had been found in Smolensk during Barbarossa and had been taken back to Berlin as museum exhibits. In one video that I've seen, traces of the white/red/white British stripes can still be seen.
The one in your picture being used by the Freikorps scum has had it's British markings obliterated by the Iron Cross. Also, they've used a version of the skull and cross bones common at the time, which can't be seen on the tanks from 1945