I am not exactly sure because the $15-$20 stuff doesn’t really hold back very long, usually it’s about two years old when it hits the shelf at those prices. It was December 2007 when I first had it, so maybe a 2005 + or – one year?? more than likely you can only get 07’s right now, it’s not the kind of stuff that gets held by dealers or is designed to age. I’ve had some recently, still to my liking but not as good as when I first had it, but that happens with more things than just wine. In that price point, wines are triangle tasted and blended to match prior vintages pretty closely, as you go up in price the vintage matters more and the quality swing is greater.
Why, are you going to a blind tasting party? If you are, let me know how it does.