Green’s Dictionary of Slang

1. a pair of braces.

c.1850		Duncombe New and Improved Flash Dict.
1857		‘Ducange Anglicus’ Vulgar Tongue.
1859		Hotten Dict. of Modern Sl. etc.
1864, 1867, 1870		Hotten Sl. Dict.

2. faces.

1857		‘Ducange Anglicus’ Vulgar Tongue.
1859		Hotten Dict. of Modern Sl. etc.
1864, 1867, 1870		Hotten Sl. Dict.