I would be terrified to plug it in. I have already been electrocuted once. That is enough to last me a lifetime. I lucked out then, and don't want to push my luck.
Some people just don't get that old and antique don't always mean valuable. I have some antiques around here that the only real value is sentimental, and to me, they are priceless. To others, not so much. But at least, none are dangerous or disgusting.