Enjoy. These finned rims occur due to increased striking pressure. Most common when the dies are titled and the metal squeezes between the die neck and collar when struck.
Reminds me of my 2011. But the fins are folded in on that one but they circle most of the coin. I like how this 2020 the fins on the reverse are standing tall.
Would TPGs slab something with extreme finned rims? I'm guessing some might not fit into standard holders without bending the fins...?