A bottle of Macallan Adami 1926 whisky sold for a record-breaking £2.2 million ($2.7 million) at a recent Sotheby s auction in London. The bottle, known as the most valuable whisky in the world, is one of only 40 produced in 1986 after aging for 60 years in sherry casks. It features a unique label designed by Italian artist Valerio Adami.