E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Lombard Street to a China Orange.
Long odds. Lombard Street, London, is the centre of great banking and mercantile transactions. To stake the Bank of England against a common orange is to stake what is of untold value against a mere trifle.
It is Lombard Street to a China orange, quoth Uncle Jack.Bulwer Lytton: The Caxtons.