A briefcase containing research tipped to win the Nobel Prize as well as a letter from the Yorkshire Ripper was lost on a tram - prompting a £1 million reward.
The black crocodile-skin briefcase, similar to those used by advocates and barristers, contains a "priceless" paper worked on by an international team of scientists which addresses one of the main questions which has baffled physicists.
It was lost by Dickie Bingham, 72, chairman of British Plc, one of Scotland's oldest companies, on Monday after a meeting at the University of Edinburgh.
