I had only one bottle of BV Georges de Latour Private Reserve Cabernet Sauvignon 1969 which I bought in Chicago in the mid 70s. It has been properly stored since, and there were no cork or other issues. The fill was low neck.
The color is still fairly intense with just a bit of age showing around the rim. This wine is quite remarkable and likely will hold a few years longer. It has great complexity and very good balance. Of course there is plenty of cassis in the bouquet and taste. The remarkable thing is the complexity of a spice-like component - as if it is a mixture of many spices, rather than any single one. It is now quite smooth and easy to drink, but there is still plenty of acid and some medium tannin. In short, I like it better than any Private Reserve vintages from the 70s that I have tasted.