Wines that age??

[Nowak728]

For a wedding present for wine drinking friends I had the idea to give them three different types of wine. One to open and drink right away, one for them to save for their 25th anniversary and one to save until their 50th. I was wondering what my options might be in wines that would age that long and what kind of price ranges I was looking at. I know very little about wines and am not even sure if it a practical idea or not. Can anyone give me some suggestions?!