This 1968 GlenDronach aged for 47 years is said it is the oldest official bottling of GlenDronach, in existence! Single cask 5837, bottled as part of Batch 13 has been quietly sleeping in a Pedro Ximénez Sherry Hogshead since September 1968. Only 301 bottles survived the angels share, bottled at cask strength, 45.9% vol.