bokaba,
The Crown Perfumery was acquired and put back into business in the late 1990s by an English businessman, who spent a considerable sum to reformulate the historic Crown scents. By and large, these reformulations were superbly done. Unfortunately, the public didn't flock to the line, and Clive Christian, the swine, bought the company so that he could launch his line using the Crown bottles, caps, and "history", and discontinued the existing product line. As mentioned above, Anglia picked up some of the line, but I haven't sampled any of them, and reports have not been entirely favorable. Imperial is an "eau de Portugal" scent, with more of an emphasis on orange in its citrus component than typical eau de colognes. Douro is a good comparison, as it, too, is an eau de Portugal type, but Imperial is rounder and sweeter. I also think Imperial uses better quality ingredients than the current version of Douro.
