Ranging from paintings and sculpture to stained glass, manuscripts and caskets, many of the objects presented here are of absolute rarity, some previously unpublished and - until recently - unknown. Of particular interest are a recently discovered Anglo-Saxon Chrismatory, the first significant piece of its kind to come to light in well over a century; a walnut casket painted with illustrations of the Prise d'Orange, a unique piece dating from the thirteenth century and a miracle of survival; the beautiful, ninth-century Byzantine silk samite of confronting birds; and a panel of The Dream of Joseph , a fragment of twelfth-century stained glass from the Abbey of St. Denis - considered one of the most important of all monuments of medieval art.