Hi Anthony
From what I can gather from a short trawl through the internet, the fenders were fitted to the Initial Production version of the Tiger, and appear to be a sheet of chequer plate with a bend in the middle as a field fitted mudguard.

Tiger 142 of sPzAbt.501 advances down a road in Tunisia. The Tiger has the unit field modifications, the lowered headlights and modified mudguards, that made the tanks of sPzAbt.501 unique.
The rest of the pictures on the website are well worth a look.
Cheers
Mick
I have personally given up hope that politicians who never experienced war first hand will ever realise that war is the worst of all possible alternatives.
Otto Carius. Commander 2nd Company sPzAbt. 502