I have an idea, Why dont you make up a creepy weird story like the "ghost in a bottle" from ebay and auction it off for fun, encourage the bidders to ask questions and see what happens, I bet you will get very interesting questions about it.
Say you found it on your trip to Africa besides a dead mummy that had a message in a weird dialect in its hand, and weird stuff has happened since, and you just want to get rid of it.
Just my 0.02
AlexGT
Or just offer it to an antiques store.