Let me add this photo that you haven’t seen before:
It dates from July 1954, according to the caption on the back in old-fashioned handwriting, and was clearly taken when the tank was next to the old war museum in the
Leitstand bunker. The most interesting bit to me is how clearly visible the registration number is inside the stowage bin — based on a photo from a few years later I had assumed it had been painted over and become visible again when that paint wore away, but you can tell very clearly here that this wasn’t the case.
There’s also a second, almost identical photo with six rather than two kids on the tank.