lucky dip, n.² — Green’s Dictionary of Slang

lucky dip n.²

[‘Such a cheque or chequebook is like a Lotto 'Lucky Dip' ticket: with it, one has the opportunity to acquire a large amount of money for very little effort’ Looser (2001)]

(N.Z. prison) a chequebook (stolen, spurious) used for confidence tricks and/or theft.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 111/1: lucky dip (also lucky) 3 a false cheque; a chequebook containing false cheques.

lucky dip n.2

lucky dip n.²