at a guess and a stab with a blunt pin I would say about 1888. Why that date........well, Bickerstaffe is noted as the photographer and, in or around 1890 he also had a studio in Rochdale, as this is not shown on the front of the card (not too hot on this but is it a cart de visite? or something like that) I would assume that it was taken prior to the Rochdale studio opening.
old rowley