Highland Scotch Whiskey
Found a bottle of Glenlivet aged 12 years in a basement. Wondering if the quality of this unblended highland scotch whisky has changed over years (which could be 10 plus). Also, how would the value of this particular bottle of this scotch may have changed over this time period. The unopened bottle has a seal over it including a stamped number of I-549. Questions, comments, rude remarks all accepted.