Green’s Dictionary of Slang

theft, stealing.

1592		Shakespeare Henry VI Pt 1 I iii: Since Henry’s death, I fear, there is conveyance.
1712		Spectator No. 305 n.p.: Provided the conveyance was clean and unsuspected, a youth might afterwards boast of it [F&H].
1852		Cork Examiner 16 June 3: Two well-dressed professors of the ‘art of conveyancing’ were brought up [...] in consequence of being informed that they were pick-pockets.
1865		Mr. Smollett in House of Commons, 14 March n.p.: ‘Speech on the Nawab of the Carnatic.’ Pickpockets of London, when they appropriated purses or watches, called the transaction conveyancing [F&H].
1889		Modern Society quoted in S., J., and C. 269: The green youth who attempted to decamp with --’s watch... was properly punished for his verdancy in the art of conveyancing [F&H].