Herederos Del Marques de Riscal

[Kazak]

My aunt gave me a bottle of
Herederos Del Marques de Riscal
El Ciego (A Lava)- rioja
1980

Through a little research I have found that later vintages have been rated pretty well, and that the wines are inexpensive and can be put away for five or six years. Does anyone know if that is the situation with the 1980 vintage? Can I even drink this now?