In a punitive expedition conducted in 1897, a 1200-strong force, under the command of Admiral Sir Harry Rawson, conquered and sacked the city. Due to this the "Benin Bronzes": portrait figures, busts, and groups created in iron, carved ivory, and especially in brass (conventionally called "bronze"), are on display in museums around the world. A scattered catalogue of some 2,500 pieces, the collection arguably constitutes the most argued over pool of antiquities after the disputed treasures of Ancient Egypt itself. After the fall of Benin, the British set apart Warri province in a bid to curb the Oba's imperial power. The Benin monarchy was restored in 1914, but true power now lay with the colonial administration of Nigeria.