I recently purchased 6 bottles of 2001 Ch. Batailley. When I opened the 1st bottle I noticed that there are small chalky looking dents on the side of the top (part closest to foil) half of the cork. Tasted, then drank the wine and there was nothing wrong with it. Opened a 2nd bottle and noticed the same thing. Is it mold??? Both bottles of wine tasted perfectly fine. I had planned to save the 4 remaining ones to start drinking in about 3-5 years but was wondering if I should consume them earlier while the wine is still good. Appreciate any help on this.