1 of 8 The alien model, which starred in Ridley Scott's film, is expected to fetch as much as �12,000.
2 of 8 Giant photographs of rock legend David Bowie are included in the sale of pop and film memorabilia at Bonhams' Knightsbridge auction house on Tuesday.
3 of 8 One of the model sheds used in the animated blockbuster Chicken Run is included in the London sale, and is expected to fetch up to �300.
4 of 8 A Guns N' Roses tour jacket included in the collection has been signed by lead singer Axl Rose.
5 of 8 Photos of rock stars like Bowie and the Rolling Stones' star Keith Richards are popular, but fail to attract the high price of Beatles images.
6 of 8 Models from James Bond films and other blockbusters are "part of a dying art", says memorabilia expert Stephen Maycock.
7 of 8 Models from the original Star Wars trilogy are a rare treat for film collectors.
8 of 8 The Terminator 3 costumes represent the latest blockbuster props to join the modern collectables market.