C and CO / CP stock trains at Mansion House station. This view also clearly shows one train unit in 'train red' and another train unit in 'bus red'.
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/citytransportinfo/51004456091/">C-COP-MansionHse-LookDown-BusRed-TrainRed</a>