IS this wine any good??

[treid]

I have a bottle (actually it is my girlfriends) of wine which neither of us know anything about and am looking for some help.

The label information is as follows:
Vieux Chateau Cortan
Gran Cru
Pomerol 1970

Mis En Bouteille Au Chateau

We realize it is a 1970 French Wine, but that is about it. Any ideas on possible value or if it is/was any good??

Thanks