Green’s Dictionary of Slang

a sixpence.

1834		Satirist (London) 12 Jan. 10/3: He [...] offered to ‘sell her several hundred consuls [sic] for a fiddle,’ but Mrs. N. thought them dear at the price.
1889–90		Barrère & Leland Dict. of Sl., Jargon and Cant.
1890–1904		Farmer & Henley Sl. and Its Analogues.