The Airborne museum recently published an old picture of the Sherman in their news section, which shows the tank on display at the Doorwerth castle.
source:
www.airbornemuseum.nl
Sadly the picture is slightly damaged on top of the Tank's name..... "ARG...GER". It does look like the tank hasn't been repainted in the picture yet....you still see remains of the US stencil "ANTI FREEZE....) close to the Census number.
I agree that it is not very likely that it was a Vc converted back to a V....Yes, you could replace the gun with a 75mm (one of us has even done this recently
), but what about the radio box at the rear of the turret and the square hatch? Fit a different turret would solve this, but than you still have the extra armor in front of the bow .30 position and the travel support for the gun.....and different hull interior layout. A number of Shermans on display in Belgium are actuallu Vc's made to look like American M4A4's, but in all cases evidence remains of their true identity....
Alex