The Keys to Orthanc were described as two, great, black keys of an intricate shape, joined by a ring of steel. At one point during The Two Towers, Gandalf said to Saruman that if he handed over the Keys to Orthanc, and his staff, in time he may be pardoned and get them both back. Saruman did not surrender them immediately, but did eventually surrender them to Fangorn (Treebeard).
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