It was a huge disaster which inspired the world's biggest box office hit - but today the RMS Titanic was reduced to fraction of its original size. Tom Rose (pictured), models specialist at Christies, takes a closer look at the first fully authenticated scale model of the RMS Titanic at Christies, in London, before it goes under the hammer on April 15, 1999, for an estimated 20,000- 30,000. See PA Story SALE Titanic. Photo by Toby Melville.