Green’s Dictionary of Slang

bianca capellas n.

[a heavy-handed Ital. pun]

White Chapel cigars.

[UK]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.
[UK]J. Ware Passing Eng. of the Victorian Era.