I bought 6 bottles of Chateau Suduiraut 1975 soon after release and have stored it properly. This bottle had a low neck fill and had no cork or other issues.
The color is now full gold. The wine is rich with considerable botrytis character and with enough acidity to balance and in general rather classic Sauternes.
The year 1975 was in general very good in the Sauternes region, but back then some of the well known properties produced rather ordinary wines even in the better years.
This Suduiraut had a very slight vegetative note which I could have done without but which might be considered a merit by some others. However it is a very good wine. However it is not as rich and complex as the 1975 Yquem.