The most valuable bottle of wine in history, says JONATHAN BRACEY-GIBBON, was a 1787 Chteau Lafite, which sold at auction in 1985 for 105,000. He also informs us that a 'butter-fingered New York waiter' dropped a bottle of 1787 Chteau Margaux in 1989. Thankfully, insurers paid the 141,000 bill. If you think you have a bottle in your cellar that could be worth a small fortune, Bracey-Gibbon has the following advice: 'The bottle must have a label; the label should not be faded (indicates exposure to sunlight); the level in the bottle must not have dropped significantly; the label should show no signs of "weeping" (where wine has dribbled out due to poor storage); and the cork should not be dry (push downwards on the cork - if it drops, drink it now).'