I had 6 bottles of the stuff from 1992 on my second visit to MOW (wasn't stopped going through customs in LHR), intent on keeping it for special occasions because, as you say, it's cracking stuff and even in straightened times in MOW it was cheap as chips. Needless to say, it all disappeared within 6 months. It was a mistake to open the first of them... for some reason our house became the place to go to for birthdays, anniversaries etc. Bloody family!