Question about 1983 Mouton-Cadet

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Hi everyone. I have a question hopefully someone can help me with. I found a bottle of 1983 Bordeaux Mouton-Cadet (Baron Philoppe De Rothschild) in a box of family stuff today. I've been kind of an afficionado for about a year, but don't know much about Bordeaux vintages. Can anyone tell me a) whether there's any chance it might still be good...or b) where I could look to find any more information about this bottle? Many thanks...

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