Green’s Dictionary of Slang

(orig. W.I.) farewell, goodbye, a greeting.

1942		L. Bennett ‘Writing Home’ in Jamaica Dialect Verses 23: Him jus’ hole-up him han’ like dis an genkly halla – ‘Peace’.
1953		R. Mais Hills were Joyful Together (1966) 250: Ras said: ‘Howdy brother. Peace an’ love.’.
1971		J. Simon Sign of Fool 189: ‘Peace, man,’ I called after him. ‘Peace.’.
1973		P. Maas Serpico 196: Some of them would smile or nod at him, and say ‘Peace, brother’.
1994		M. Montague Dread Culture 14: A Rastaman walked up, greeting them, ‘Rasta love, Brother Butty. Peace, youthman.’ ‘One love, Iyah Nyah,’ Uncle Butty responded.
2000		Observer Rev. 9 Apr. 5: Peace, everyone.
2009		Mail & Guardian (Johannesburg) 24 Sept. 🌐 Peace, y’all. Legalise it.