Green’s Dictionary of Slang

White Chapel cigars.

1886		Referee 6 June in Ware (1909) 27/2: There was adjoining this a smoking-room or salle d’ attente, in which were some stale English papers and the odour of equally stale cigars, also English – veritable Bianca Capellas – but of the sort of thing that we wanted there was no sign whatever.
1909		J. Ware Passing Eng. of the Victorian Era.