OK, I'm still wondering about this one. Remember though, it was at an outdoor museum near Minsk. Of course, they could have moved it there from Berlin, but a tank like this would have been considered "junk" at the end of WWII. I suspect it's one of the PzKw series with the rear sprocket replaced by another road wheel. A few people, including myself, have also made comments about that unusual sponson on the front.