Site: Roman numerals at Christies (1 memorial)
SW1, King Street, 5
This brass plaque is on the floor of an entrance, now disused, but visible from the street. When we first spotted it in about 1999, the building was being used by Spinks (who could offer no explanation) so we put it on our Puzzle Corner where David Hopkins saw it in 2012. He realised we had mis-transcribed some of the Roman numerals and so unlocked the answer.
