I found an article which says that it was afake/mock-up of a Victorian painting:

The scent of a real woman
Julie Burchill
Saturday June 28, 2003
The Guardian

".........perfumes were called My Sin, Soir de Paris and, my childish favourite, Tabu, a deep, rich olfactory stew from Spain, whose ad featured a drawing of a girl boasting one neat horn, if you please, on her otherwise normal head. A bit too taboo, apparently, for she was replaced by a faux-Victorian painting of a brunette in a satin gown being crushed in a passionate embrace by a man holding a violin - shades of Sherlock Holmes and Irene Adler."

I'll keep looking.