If you live in a state where you can receive alcohol by delivery, there are several reputable wine stores that ship nationally and have ‘89 HB in. Use wine-searcher then call the store to discuss the bottle. Ask for a picture of the bottle so you know what you are getting re ullage and label condition.
If that is not an option...
1989 Palmer is a stellar wine. I assume the Margaux is as well, and CT shows a high score.
In addition to Palmer, I also happen to love ‘89 Pichon Baron, Montrose, Angelus if you’re willing to go outside First Growths.