Valari, apologies, but your coin is not double struck. It's damaged.
We always invite visitors to first read our FAQs and tutorials (easily accessible on our home page, top center) for details on what genuine error coins are, and which ones qualify for our complementary appraisal service, before uploading photos.
There, you will find ample information on so-called error coins, and how to distinguish them from damaged ones.
Though we don’t ordinarily handle these, we did make an exception here and studied it closely for your reply
Good luck as you continue your search!
