B & W prototype Nautilus (Mk1) hand made from wood by Laurence Dickie. Note the 801 bass driver, which quickly became obvious that it wasn't strong enough. Mk1 proved the concept to be sound. All this eventually became the Mk2 Nautilus a couple of years later and then onto Vivid Audio speaker products today.
Video from the rush tapes - 1st gen. No sound. Video © Jake Purches 1991/2022.