Green’s Dictionary of Slang

candle (and) sconce n.

[rhy. sl. = ponce n. (1)]

a pimp.

[Ire]J. Phelan Letters from the Big House 57: ‘Dicker Maloney,’ recommenced Harry in haste. ‘Dicker. An alphonse, a candle-sconce, a diddly-donce, of the first water.’.
[UK]J. Franklyn Dict. of Rhy. Sl.
[UK]J. Morton Lowspeak.
[UK]R. Puxley Cockney Rabbit.