Green’s Dictionary of Slang

sixpence.

1672		‘Greenwich Strollers’ in Covent Garden Drollery 23: The Prizes they took, were a Londoners groat, A Gentlemans size [sic], but his skipkennels pot.
1688		T. Shadwell Squire of Alsatia n.p.: Cant List: Sice. Six-pence.
1693		Dryden Persius III 36: But then my Study was to Cog the Dice; And dext’rously to throw the lucky Sice: To shun Ames-Ace, that swept my stakes away; And watch the Box, for fear they shou’d convey False Bones, and put upon me in the Play.
c.1698		B.E. Dict. Canting Crew [as cit. 1688].
1702		T. Brown Letters from the Dead to the Living in Works (1760) II 266: [They] are often-times forc’d to tick half a sice a-piece for their watering.
1705–07		N. Ward Hudibras Redivivus II:3 27: For who’d not readily advance / A Sice, to see the Devil Dance.
1719		A. Smith Lives of Most Notorious Highway-men, etc. (1926) II: [as cit. 1688].
1725		New Canting Dict. [as cit. 1688].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. 1688].
1741		Canting Academy, or the Pedlar’s-French Dict. 112: Its Six pence a Night, Its a Sice a Darkum.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1830		Lytton Paul Clifford I 39: As Mrs. Lobkins expressed it, ‘two bobs for the Latin, and a sice for the vartue.’.