I have a bottle of Glenfarclas 1989 Oloroso First Fill.
I think it has now been replaced by both 1990 and 1991 Vintages. The one I have is a tremendous whisky. A wonderful nose of toffee, cream, vanilla and demerara. Chewy with oak, vanilla and sherry on the palate and a long, smooth and sweet finish.
If you fancy a rich, complex & sherried whisky, buy it.