Just too much oak here. It's not a bad oak -- not rotten or anything -- just way too dominating, like licking a plank. Underneath that there's a vague vanilla honey-spice thing going on. Not bad whisky, but there's no vitality or contrasting "elegance" to speak of, and any magical Springbank qualities have been lost to the years.
Very woody and hot. The woodiness could be expected with a whiskey this old, but it's just too woody. And the noticeable heat at only 43% results from the fact there is no sweetness or flavor to mask it. This cask must have been refilled many times to result in such a thin whisky after 39 years.