Older Wines

[nogatau]

I grew up in the Napa Valley, but until recently only purchased and drank wines that were a couple of years old. I haven't had much experience with wines that have aged a bit.

Now that I've started looking into older wines, at auctions, for example (not extremely old, but 10-15 years+), I'm curious about those that state they are "not intended for human consumption". Is this because the wine is just meant to be collected, or is it an indication that the wine was stored improperly and would indeed not be fit to drink?

An example would be an '88 bottle of Marilyn Merlot that I aquired. Would I be wrong in wanting to drink this (collectability aside)?