Excellent, with the levels into the neck and good labels. Please expect some (sugar) sediment which is perfectly normal.
Barsac is situated within Sauternes in Bordeaux with the wines from there sometimes called Sauternes. The wines are made with Semillon, Sauvignon Blanc and Muscadelle grapes that are left on the vines to over-ripen. They are infected by a fungus called Botrytis which gives them their unique characteristics, though this is a precarious winemaking process since the balance has to be perfect.
1989 was a great vintage for dessert wines from Bordeaux and this should be a cracker. A great birthday or anniversary gift, it comes highly recommended.