i have a 1971 Dom Perignon but I would not dream of opening it----it's been kicked around from pillar to post , been stored in 11different houses. It has never been cellared and would be totally un drinkable .
That does not mean that your bottle is not quaffable Bill, if it has been stored in a cool dark place and not picked up and shaken every year or two, then there is every chance it could be ok (providing it wasn't PLONK in the first place). I would think Renato would always buy a superior wine. So the balls in your court!

