Bronze

Bronze was a type of brown metal, used since the Bronze Age.

Coyn owned a bronze dagger and axe. (PROSE: The People's Temple)

George Litefoot thought that the time cabinet was made of lacquered bronze, but the Fourth Doctor recognised that it was actually made of fused molecules. (TV: The Talons of Weng-Chiang)

The Eighth Doctor wore a bronze pin on his battleship grey cravat after his regeneration. (TV: Doctor Who)

Though constructed from Dalekanium, the casings of Dalek drones of the Last Great Time War and beyond were associated with bronze; a Dalek on ancient Earth became known as the "Bronze God". (AUDIO: Living History)

Hippopotamus guards wore bronze armour with rope to keep them standing when asleep, which kept them standing even as they slept. (WC: The Secret of Novice Hame)