Macallan 67 Year Old Exceptional Single Cask 13. A rare and exceptional single cask from The Macallan. This is a 67 years old Macallan, distilled in 1950 and matured in first-fill sherry American Sherry butt, it is bottled at a cask strength of 53.4% after all those years. Single casks are adored by whisky connoisseurs around the world and one like this is truly exceptional. Only 336 bottles were ever produced.