Value of Cordova Cellars 1989 Vidal Blanc

[mammakat]

I was given a bottle of Cordova Cellars 1989 Vidal Blanc for Christmas in 1989. This was the first year this winery was in business in Cordova, TN, outside of Memphis, TN. I have not been able to find a value on this 750 ml bottle of wine. Would appreciate any information as to value, if the wine is still ok, or where I might be able to search on the internet. Any information would be appreciated.