The mint is not to blame. Someone damaged it mechanically. Either the metal was ground off or pushed with force. You should red The Red Book, a guidebook of U.S. coins. Welcome to the hobby.
DISCLAIMER (The fine print): We have answered your question about this coin despise the fact that it may not have met the qualifications for our complementary appraisals as explained in our FAQs. We ask collectors, before submitting queries, that they first consult our posted tutorials and prior posted questions and answers. Being up front that our specialties are classic and rare coins, we ask them not to submit images of damaged coins and modern minor varieties. We welcome your positive feedback if we had the privilege of helping.
