The Glenrothes has a way of categorizing their scotch that is markedly different than most other distilleries. Rather than bearing a standard age statement or name in lieu of one, the Glenrothes labels their offerings by the year in which the barrels were first laid down. The bottle details tell you when the scotch was bottled, letting you do your own math to figure out the age. The Vintage 1998 is from their Core Vintage line, though there are Reserve, Special Release, and Classic lines too.