I've got two KBS bottles. One has a bottled on date of 2/17/12, but also has the numbers "02 12" embossed on the bottom of bottle. The other bottle does not have a bottled on date, but has the numbers "02 10" embossed on the bottom. Is it reasonable to assume the latter one is from February 2010? Also, any thoughts on when KBS reaches it peak would be appreciated. I am trying to decide when I should drink these two. I plan on drinking the 2012 KBS soon, just because I have never had it before.