From the Independent:
'A book on the history and exploits of Manchester United set a world record price for a sporting publication last week when it was sold for $1.6m (£800,000). The sum was paid for the Manchester United Opus, signed by the Prime Minister and ruler of Dubai, Sheikh Mohammed bin Rashid al-Maktoum. It was sold at a charity auction in the sheikhdom.
'The book was bought by a group of businessmen from Dubai. The previous record for a sporting publication was $1.1m. The number 777 - Sheikh Rashid's favourite number and considered extremely lucky in Arabic culture - was sewn into the inside of the book.'