Worthless= die deterioration doubling, mechanical doubling and plating issues which can give the appearance of doubling. From your photos I'm at die deterioration doubling. Sorry, but not a winner. But if you like it, by all means keep it.
If you are convinced you have a true doubled die, then you need to send it to John Wexler. Cost-$3.00 for one side, $5.00 for both sides plus shipping to be returned to you. Look under "Submissions" at www.doubleddie.com. Best of luck to you.
What you need to do if you think you have a doubled die is to be able to match it EXACTLY to the examples in the guide.