I have an old bottle of Martini & Rossi vino vermouth and i'd like to know the value?

the label is detailed and in color print-pretty fancy. its a 1pt and 14 fl.oz. bottle (very large bottle) there is no date on the bottle. the bottle is opened and empty, and the label is not in perfect condition. i would like to know it's worth please. I've checked ebay and other sites but haven't found anything similar.