austrian TBA 1976

[UTlaw]

I recently inherited some wine from my grandfather. I have tried to learn about the wine but can find nothing. I know 76 is a good austrian vintage, but that is about it. Can anybody give me any info about this wine or it's value if it has any.

I think the Vineyard was Herman Ohlenschlager Oppenheim am Rhein. It is a
1976er Donnerskirchner Sonnenberg TBA

Thanks oder Danke (whichever is more appropriate)
Brian