Green’s Dictionary of Slang

(UK Und.) an accomplice who passes the counterfeit money produced by the coiner.

1663		Wandring Whores Complaint 4: The first was a Coyner that stampt in a Mould, / The second a Voucher to put off his gold .
1669		Nicker Nicked in Harleian Misc. II (1809) 108: There come in shoals of hectors, trepanners, [...] lifters, kidnappers, vouchers, mill-kens.
1671		‘L.B.’ New Academy of Complements 204: The first was a Coyner that stampt in a Mould, / The second a Voucher to put off his gold.
c.1698		B.E. Dict. Canting Crew n.p.: Vouchers c. that put off False Money for Sham-coyners.
1712		‘Black Procession’ in Farmer Musa Pedestris (1896) 37: The first was a Coiner, that stampt in a Mold, / The Second a Voucher to put off his Gold.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1754		Scoundrel’s Dict. 30: The First was a Coiner that stampt in a Mold, / The Second a Voucher to put off his Gold.
1869		‘Thief-Catcher’s Prophecy’ in W.H. Logan Pedlar’s Pack of Ballads 142: [as cit. 1754].