Years ago, on a trip to Bordeaux to taste samples from a new vintage, I had the opportunity to have dinner at Domaine de Chevalier. The host, Domaine de Chevalier owner Olivier Bernard, used the occasion to raid the Chevalier cellar for a couple of seriously old bottles of wine.
If memory serves, the vintage was 1927, or thereabouts. There were two wines. Both had been decanted and presented at table. One was red; the other white. Remarkably, both were the same color.