value- wish to sell

[harriet feinglass]

I found 4 very old bottles of liquor. How can I ascertain their value . I would like to sell them. How can I ascertain their value?

1. Cognac Pellison- Cuban- manufactured in 1883
2. D.O.M.-Le D irecteur- waxed sealed- no year indicated but very old.
3. Partners' Old Port- Portugal- no year indicated
4.Peter Hagen Old Fashioned Rock N' Rye

Thanks,
H