Green’s Dictionary of Slang

a white greatcoat or overcoat.

1827		‘The Mill’ British Minstrelsy 108: I say, who’s that in the swell tilbury and the lily benjamin?
1834		‘The Mill’ Museum of Mirth 45/1: [as 1827].
1847		G.W.M. Reynolds Mysteries of London III 85/1: A Stranger—looked like a mushroom-faker. Lily benjamin .
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.
1895		C. Crowe Aus. Sl. Dict. 45: Lily Benjamin, a great white coat.

a low-crowned white hat, esp. as worn by a coachman.

1810		Sporting Mag. Mar. 280/1: Say nothing; leave all to me: you shall slip on my lily shallow and upper toggery.
1821		‘An Amateur’ Real Life in London I 102: A green coat, white waistcoat, buckskin breeches, and boots, over which a pair of leggings appeared, which extended below the calf of the leg and half up the thigh, surmounted with a Lily Shallow.
1876		‘Some Road Slang Terms’ in Malet Annals of the Road 395: 4. Of Coachmen A lily shallow...A white hat (flat, low-crowned .
1877		‘Larry Cafooslem’ in Laughing Songster 159: And with a lily shallow, / I sported a tidy tile.

a white hat.

1833

‘Knowing Bill’ in Rake’s Budget in Spedding & Watt (eds) Bawdy Songbooks (2011) III 87: On Sundays too, my rummy lads, / I comes it strong and flash; / Vith my lily tile and Benjamin.

(UK Und.) a silver watch.

c.1850

Duncombe New and Improved Flash Dict.