Ffirst, welcome to CCF. Second, those are some very nice close-ups. With regard to the "wrinkle" below the desogner's initials, is is most likely a small plating bubble. I guess that it could instead be a small die scratch. Either way, I don't see much extra numismatic value for your coin.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz