Another great help from my friend Duson - this seems to be a photograph from May 1945 from Prague - and if you look closely, you can see the number 212 on the door of the 4th FGT from the protographer!
Another interesting thing is, that the unit marking is not on the cab, but on the bumper. So next time I see our FGT I am gonna look for it there.
I hope you enjoy it! I really do
Frankie