Dad's 70th birthday, he cracks open a Madeira wine that has been in his possession for 40 years. It was purchased in Madeira 1984, and by the looks of it the label says 1954 (ie, 30-year aged).

But it's not clear.

Some auction sites suggest we just lost out on a few hundred quid/euro of second-hand value—"dude, that's hundreds of thousands of sats, what's wrong with you?!"—but we can't be sure.

Any drink and wine experts among the Stackers?