explorette wrote:

As far as the car diagrams go,they were replaced donkeys years ago to
eradicate anomalies such as the Ongar & Aldwych (shut the same day)
branches & other lesser items,
so I am staggered that 1 survives (car number?). I can only imagine
that the car/s concerned have been laid up/split up at Hainault or
West Ruislip Depot for
a longgggggg time and escaped updating by the depot staff.

Were the diagrams actually removed or just covered up with newer ones?