Margaux

[manuel]

19 years ago, my uncle gave me a bottle of French Wine as a gift. He told me it was valuable, but I don't know how valuable is it.
I only know this tips, because the label is damaged:

- Type: Margaux. red
- Year: between 1928 and 1932 (most probably 1928)

Because I'm not a specialist or a gourmet, I'd like to know how much does this bottle cost, in order to sell it.