1964 Kennedy Half Dollar With 3 Unusual Marks On JFK Neck

Hello I'm Gene from Maryland USA. I've recently rediscovered my love for coins. I started collecting coins when I was a child. I received a bicentennial proof set along with 1905 Filipino peso as a gift from my uncle. I stopped collecting at age 19 and now 50 years old back at it and will pick up where I left off. I still have every coin from my childhood but because I had the help of my uncle who traveled the world collecting coins, my collection doesn't look like a child from 80s put it together.

Anyway, I joined this forum because I really wanted to comment a post I read from a user named Thump or Thump1 or a variation of it. I can't find that person or their original post now. The post was about a 1964 Kennedy half dollar that had 3 unusual marks on JFK neck close to his chin I believe. All replies that I saw told the original poster that the marks came from someone heavily cleaning his coin and that it become a POS only worth the silver content. While the coin looks like it as in fact been heavily scrubbed, I think the replies were quick to dismiss any possibility of the poster's coin being a special one. I wanted to show the original poster as well has the commenters that I have the same coin with the same error in different spot but also on JFKs neck. Can somome help me find this person Thump please. I'll put a Pic of mine in this post.