re: Shelf life of unopened whiskey?

There was a time around 12-15 years ago, I was buying Stitzel-Weller branded bottles of liquor on eBay on the cheap before the bourbon craze. Most of it was from the 1960s and was branded Old Fitzgerald, Weller and Old Cabin Still. I drank it heartily with no ill effects. Too bad you can't get any of them now for less than $500 or more.