AEC Mercury

During the late 1950's Park Royal produced cabs for various AEC chassis at volume production rates. Here is an example of a fibre-glass cab on an AEC Mercury chassis.

mercury-1.jpg (33729 bytes)mercury-2.jpg (33663 bytes)mercury-3.jpg (48772 bytes)mercury-4.jpg (52296 bytes)

mercury-1.jpg (33729 bytes) I am uncertain of this cab but my guess is that it is a Park Royal cab, similar to the one above, mounted on a Maudeslay chassis that would have almost certainly been a badge-engineered AEC - and probably a Mercury.  It was probably destined for the commercial motor show in 1959.  Does anyone have any knowledge of this vehicle?