Neck grille
From Tardis Wiki, the free Doctor Who reference
The neck grille was the part of the neck section of the Dalek casing which served to cover the Dalek mutant within. It was supported by neck rings. (PROSE: Prisoner of the Daleks)
Typically, the neck grilles of most Daleks were coloured black. (TV: The Daleks et al.) However, the white Imperial Daleks created by Davros were distinct in that they had golden neck grilles with white neck rings. (TV: Revelation of the Daleks, Remembrance of the Daleks)
