upso - If the wine is older and no longer available on the open market, you could pursue auctioning it commercially, but that usually requires some sort of certification that it has been properly cellared, has sufficient fill on the bottles, corks still intact, etc...
Richard Fortney at Maumee Wines has a good customer list and he may be able to connect you with someone interested in purchasing them.
If you don't find a buyer, you can consider donating it for auction and taking the tax deduction. Mobile Meals of Toledo does an annual Wine Gala where they offer rare and fine wines in a live auction and other items (including wine) in a silent auction. I'm sure Mobile Meals would love to have them, as they will be celebrating their 25th Wine Gala next year.