Glendullan 18 Year Old Manager's Dram 1989
The Manager’s Dram series of whiskies were bottled exclusively for employees of what is now known as Diageo. These whiskies were selected by the respective distillery managers within Diageo malt distilling and bottled at natural cask strength.
An 18 year old Glendullan bottled in 1989.
Although not stated appears to be a 75cl bottle.