How much, do you think?

[csulfaro]

I must let you all know that I don't know much about wines or types of champagne. I have two bottles of champagne in which I have been told might have some value.

The 1st bottle is Bollinger-Special Cuvee/Brut. There isn't a year on the bottle, so I can't say what year it comes from.

The 2nd bottle is Bollinger-Grande Annee-1985/Brut.

I am just wondering if anyone would be kind enough to help me in finding out how much my bottles are worth.

Thanks for your time&help