Almost exactly like mine, a year earlier maybe in that your seat tube has a sleeve at the top and the pace forks have the chrome brace on the back whereas mine had a cast and machined alloy brace on the back - cooks rather than topline, ritchey rims, xtr gearing... did it come like that new?
I suggest you ruthlessly track it down through successive owners like a Hollywood action film and stop at nothing to get it back.
It is after all, the pinnacle of Lightweight go anywhere cycling.
(And by pinnacle I dont mean that halfordsalike chainstore obvs)
Also post a link here to its history and setup??