Marble sculptures from the Parthenon in Athens now held in the British Museum (5,7)
I believe the answer is:
elgin marbles
(Other definitions for elgin marbles that I've seen before include "some old stones" , "5th Century BC Greek sculptures brought to England" , "a lot of relief shown in London" , "Statuary from the Parthenon" , "Sculptures from the Parthenon, held by the British Museum" .)