From the sounds of it, if you intend to sell, your bottle seems less than
ideal, at least to me. Older corked bottles can be iffy, especially if they
were stored on their side instead of standing up.
My guess is you'll not get many takers should you decide to sell - I'm a
bourbon/whiskey drinker and I would not be interested based on your
description. Photos might help show the level of "damage" but it sounds
like something I'd shy away from.
My suggestion - if you are a Dickel fan (or know one), decant it into
another bottle and give it a try. "Infection" (to you) seems unlikely
but if you're referring to "cork taint", that's a possibility and you'll know
after a taste.