Sorry, Mark.....but no real data on that. I had a '99 sometime in the last year and it was still going strong and no signs of drying out or dropping fruit. So an old Carlisle PS probably doesn't exist.
However....I'm a LosAlamos guy...we can draw the most persuasive of conclusions based on zero data. Mike's PSs have a heap of huge fruit, plenty of tannin and structure. I see no reason that they won't age out 10-15-20 yrs. Whether the do that magically comming-together thing and become an absolute pleasure to drink, that's an open question. And their high alcohol levels cause a bit of concern... those wines, as they lose fruit, can start to smell/taste late harvesty in character.
Nonethless, I'll be taking some data point. Check back with me in 10 yrs!!