request for information

[james armbruster]

I have in my cellar, stored as reccmmended by the maker, a red wine from the Rioja region of spain.Brand name: Faustino 1, bottled by : BODEGAS FAUSTINO MARTINEZ,S.A.
OYON-RIOJA-ESPANA.I aquired this bottle while visiting in Spain from a good friend in the later 1970"s. The wine was bottled in 1970 and is Botella No. 28698. On the rear of the bottle is a lable that states.
Rioja Gran Reserva B. No 389418 3.
can anyone give me information as to value of should I just open and drink it on a special occassion.

Thank you