What is the value of a 75cl bottle of Baron Philippe De Rothschild 1982 Mouton-Cadet?

1983 Mouton Cadet is worthless and undrinkable at this stage. it should have been consumed by 1988 or 89 tops. Current vintage would retail anywhere between $7 and $12 USD, depending on the region/state and the merchant's markup. While it was orignally fashioned by Baron Rothschild (from Mouton Rothschild, hence the name) decades ago, that is really where the similarities end, as Mouton Rothschild is a First Growth Bordeaux specifically from the Pauillac appellation, commanding prices ranging from the low hundreds to the thousands, depending on vintage. Mouton Cadet is sourced from all over Bordeaux. Because the vintage was a favorable one for most of Bordeaux (but by no means topping '82 or '86, except for Margaux) it could be fun to display on your mantelpiece as a conversation starter!