Recently I acquired from a family friend a half bottle of Crown Royal with a 1966 strip stamp. In Canada, this meant at the time the whisky was put on the market in '76, the youngest whisky in it (10 years old) was distilled in '66 and the oldest (30 years old per the rear label) was distilled in 1946.
I bought a current half bottle of regular CR to compare them.
The '76 CR is superior IMO in that it is sweeter, has a smoother, longer finish, and has a slight "cigar box" note that is very pleasant. It is very silky on the palate with well-integrated spicy notes which may come from the rye flavouring whisky in there.
The current one is quite similar though, just a tad less sweet, with a similar oaky profile. It has a slightly harsher finish which may denote the absence of 30 year old whisky in the blend, or possibly the rye flavouring whisky has a bigger voice in the current bottlings.
The current one would have been aged and blended in Gimli, Manitoba, and the older one in Ontario or Quebec or both.
Once again I give the nod to the older bottling but overall they are pretty similar, I expected more difference than there was.