is it any good?

[jennifer]

I was given a bottle of spanish red wine from 1973 and was wondering if the year was any good and how the wine would be if i opened it today?
the label reads:
"Vina Albina"
Gran Reserva 1973...
it also says:
Bodegas Riojanas, S.A.
Cenicero Rioja Alta - Espana

could you please advise me on whether or not this bottle is worth saving for a special occasion, should i drink it with dinner tonight in front of t.v., or is it already too late?
thank you!